Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3a00c60f7bfa571…

MALICIOUS

PDF

100.5 KB Created: 2021-04-02 07:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ac02ff9a91b64571ab8137c02b484d34 SHA-1: 20e809364e1d974aa982947d59e09b235e8f2ed4 SHA-256: d3a00c60f7bfa571d9eb74b8de62abe66237c850eaa66603db7a1330b4d4a62d
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains a large number of external links, including a link farm, suggesting a malicious intent to manipulate search engine results or redirect users to harmful sites. The PDF also embeds URLs that could be used to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://zajinet.ru/wix?keyword=asus+crosshair+vii+hero+wifi+manual PDF link annotation
    • http://wepalulinoviwo.iblogger.org/95137237889.pdfIn PDF document text
    • https://vanufutalolu.weebly.com/uploads/1/3/1/1/131164160/tobolugisogawube.pdfIn PDF document text
    • https://mabaxezo.weebly.com/uploads/1/3/4/7/134766945/7082292.pdfIn PDF document text
    • https://suxekupawuva.weebly.com/uploads/1/3/2/7/132710704/8324228.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0dd4521b-3e41-4083-9bcc-807cce03ae78.filesusr.com/ugd/cfe2e9_36c790931d1a4779b7596e48c19f7c76.pdf?index=trueIn PDF document text
    • https://bed1e925-73f7-457c-87ff-53f226988024.filesusr.com/ugd/d4a8ce_c2fae7595e544eeea534578658015927.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/7164630219.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/919b66ab-e4de-42d1-9d02-fdc5f04a8681/27702222349.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/what_is_the_unlock_code_for_sprint.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/tagiderajanegutalaribaji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85c72f29-5806-4fcb-aacd-2152aa8c1ad9/sketchup_software_free_download_for_windows_7_32_bit.pdfIn PDF document text
    • https://2178e3ec-2e0a-46e0-af35-d8a6fdfeb21a.filesusr.com/ugd/c411cf_fc5016c00d4c43ceb4d78766f6e3c288.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/mobogenie_lite_for_android_mobile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/827b45d2-2371-41c8-afd4-2f06ee6557be/freelance_academic_writing_jobs_online_india.pdfIn PDF document text
    • https://23da7c74-6e14-424a-b22a-901aa35eafb1.filesusr.com/ugd/9cc572_324531c346a44d10b54c43786bb3102c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/068ccc7c-d2c1-47ab-bd9d-be936d4d3408/31932682204.pdfIn PDF document text
    • http://pixoralozod.epizy.com/hp_laserjet_professional_p1102w_keeps_going_offline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c92fbe2-5b7b-445a-8154-12f9f4fbbfa6/how_to_write_a_performance_review.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/christmas_songs_backing_tracks_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/525b1dd1-5a2f-40a0-a133-660bad9cc721/86190638795.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93e1ec06-3e3b-4c10-af48-8134598406c8/descargar_biblia_reina_valera_1960_gratis_en_espaol_pc.pdfIn PDF document text
    • https://6bc553e5-d0de-4278-827a-c77c8eb32fbd.filesusr.com/ugd/4a6c57_4255526bd1ea4c65a21a025e0dccd3ed.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001071e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1071E 13448 bytes
SHA-256: 86ad39abd5f331501c1bc20599a23995092e7938bf2d3e840c1bbf29cdf91212
font_01_sfnt_off00013207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13207 5264 bytes
SHA-256: 49c00ebd8107e1e88af9ab68c1d909336f5f533ef488de4f0333905ee938f42f
font_02_sfnt_off000143de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143DE 13516 bytes
SHA-256: 52e441d86d1c08c286eb943d15e20a5cd8ffdfd83fbf3626b1e5aa34a69f1f24
font_03_sfnt_off00016ce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16CE3 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15