Malicious PDF — malware analysis report

Static analysis result for SHA-256 4474019e6ac228b0…

MALICIOUS

PDF

104.3 KB Created: 2021-03-14 22:57:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: fdb3135a8c113d80c60a5ef9317216cf SHA-1: 64589c7587e6dd873b4f6dd273fc6a37ebeb807a SHA-256: 4474019e6ac228b0f43ce2cae61f82a718bf67d7414ef17b53b0e7c4c4cb35e6
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious by ClamAV and an ML model, indicating a phishing or trojan-like behavior. It contains a link farm with numerous external URLs, including one that appears to be a lure for 'Atharva veda in tamil pdf'. The presence of multiple external links suggests an attempt to redirect users to potentially malicious content or phishing sites. No scripts were extracted, but the overall structure and URL distribution point towards a phishing or content-luring attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://baarspo.ru/award?keyword=atharva+veda+in+tamil+pdf PDF link annotation
    • https://lejalebenepuk.weebly.com/uploads/1/3/0/7/130776022/kasumidinejodiz.pdfIn PDF document text
    • https://sesadawaroni.weebly.com/uploads/1/3/5/2/135295108/7163881.pdfIn PDF document text
    • http://vetobiz.sportsontheweb.net/what_size_staples_go_in_a_staple_gun.pdfIn PDF document text
    • https://sowefitubi.weebly.com/uploads/1/3/1/4/131406610/352f5438dc380d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393483/normal_601759ad2bbb7.pdfIn PDF document text
    • https://gapibuxox.weebly.com/uploads/1/3/2/6/132695643/965113.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474449/normal_60387ae70b61e.pdfIn PDF document text
    • https://doxorovovo.weebly.com/uploads/1/3/4/4/134479089/1814520.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451023/normal_602207cbe1686.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cb70cc59-2297-49c3-b7e2-2ac7e26e28d4.filesusr.com/ugd/4479ed_93ce0ab6b6514d27b931cd3fa5afbcaf.pdf?index=trueIn PDF document text
    • https://254a6a59-343e-4b7e-907c-c4819e171fff.filesusr.com/ugd/decf6f_079e9aca376041af9187ecb2c8d5d93a.pdf?index=trueIn PDF document text
    • https://05e27880-d5e1-4d3d-8428-ba943e9300bc.filesusr.com/ugd/b56239_adcd75d53aa54599870d067de7f24d9c.pdf?index=trueIn PDF document text
    • https://9cf93ecd-64ee-4ad6-afcc-f350577a7522.filesusr.com/ugd/c4dbd3_a22696f107b944e28f39508ea656bd9a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tosevud/free_kalimba_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/multiplying_polynomials_by_monomials_worksheet_answers.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/zoom_h1n_vs_tascam_dr-07x.pdfIn PDF document text
    • https://46c0acaa-de7d-4f46-84f0-c2cf1d8ff7d9.filesusr.com/ugd/ac1638_0152ea9fb24b4f14a470f040dfb37d20.pdf?index=trueIn PDF document text
    • https://4eff3ec4-d147-45d1-be73-876d9e1d0019.filesusr.com/ugd/efb3f0_a4312cb50d3e4fc0a9e9417b965b9328.pdf?index=trueIn PDF document text
    • https://033a7475-7ccb-45c1-8f1e-38fd320d48d0.filesusr.com/ugd/03a576_cbbfd68a27144c8799d0a97380d81178.pdf?index=trueIn PDF document text
    • https://aee666f7-65d2-4416-8089-42e5bd85255d.filesusr.com/ugd/c4036c_6f38bc5ff8ef4de78665c78e923d704d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/nikujudaliromebutepobase.pdfIn PDF document text
    • https://d86ad34a-7df2-4f47-937b-a12ab5abc0fa.filesusr.com/ugd/8cbfce_7e11fc28fa674843877dbd757a678f67.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10237 5152 bytes
SHA-256: ffe87fe0e95e46285b61d4864b44036f2eecf31723eb83512d591278f073d531
font_01_sfnt_off00011397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11397 16884 bytes
SHA-256: 6d3bc60775aca91c7fa7d2c12527370f92e0cd3b155d2c5e5e4c7fd4d60d9502
font_02_sfnt_off000139c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139C1 3772 bytes
SHA-256: 9389eabb5da0f7ff5893e499ff791b47d46466a46589dcf6e6727fbd9e34bd63
font_03_sfnt_off00014567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14567 12872 bytes
SHA-256: 3f5465374c694c87938a9c24ee97b7276e5bc9b2ef3e8aa213cdc5c1e4f19569
font_04_sfnt_off00017060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17060 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e
font_05_sfnt_off000185cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x185CC 2816 bytes
SHA-256: f74cd5da1b6b89fe668939328998f6c1e0be1ca39db24a1b8f23f8b125fea371

Open this report in the interactive analyzer, or submit your own file for analysis.