Malicious PDF — malware analysis report

Static analysis result for SHA-256 3660378bd26ff16c…

MALICIOUS

PDF

84.4 KB Created: 2021-03-14 21:17:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: fea9ec61c250eeced436a1c2295aeac1 SHA-1: de1c143cd6dc39259f9f62810775580ba4f20eb1 SHA-256: 3660378bd26ff16c6e7c5351fb6330e2c133bff7748da8f54a8bc3f5a5314076
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically designed for phishing or malware distribution. The embedded URLs point to known malicious infrastructure, and the ML classifier strongly flags it as malicious. While no scripts were explicitly extracted, the nature of the PDF and its links suggest it's intended to lure users to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://dafemum.ru/award?keyword=hanuman+chalisa+gita+press+pdf In PDF document text
    • https://cdn.sqhk.co/jinubodilev/QZfHDhi/80908730277.pdfIn PDF document text
    • http://bikomowaxibujoj.medianewsonline.com/waiting_for_godot_as_absurd_play.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/jdyjfn1/lebara_australia_review.pdfIn PDF document text
    • https://tumunonapuve.weebly.com/uploads/1/3/1/3/131379134/notosisekunas.pdfIn PDF document text
    • http://francobusiness.com/92887217442gucbf.pdfIn PDF document text
    • http://xatovapotogu.mywebcommunity.org/kikaponalatifoluduk.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/jcCRmSS/poughkeepsie_dmv_address.pdfIn PDF document text
    • https://vatipasa.weebly.com/uploads/1/3/0/7/130775610/5931567.pdfIn PDF document text
    • http://216tilford.com/manual_photoscape_v3.7lehmx.pdfIn PDF document text
    • http://rostov-mobile-doctor.ru/nesibirasatosuueqwv.pdfIn PDF document text
    • http://paypallsecurity.com/430110492622azyv.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://d86ad34a-7df2-4f47-937b-a12ab5abc0fa.filesusr.com/ugd/8cbfce_62b50e212a9c4b8f975591153a451e11.pdf?index=trueIn PDF document text
    • https://6bfd3344-23d3-4e03-ab7d-00c1c23eecf6.filesusr.com/ugd/be19e1_0ae517ecd50c4fe59393931cb9428f20.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/gibajivuwozasogobud.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/catanzaro_informa_incidente_santa_maria.pdfIn PDF document text
    • https://4ad55601-b8ab-4ae0-bc0e-e90069072326.filesusr.com/ugd/3aca14_912405e48e7548af86955bcc9fc5dafe.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/tozasulubef.pdfIn PDF document text
    • https://97d49ff2-d914-4ae4-8ac8-5e5cf5f77cad.filesusr.com/ugd/6350c7_3043631b879540f79dff5b5acff1c52b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/firudegix/3572742454.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/56474597639.pdfIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD10 5528 bytes
SHA-256: 83cb42a707f849a17417deec9bf36ca149a7cf02b2c0f72a0e1e37e270d232e0
font_01_sfnt_off0000dfad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAD 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off0000eb10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB10 11324 bytes
SHA-256: f493bf87a3d1ab4d0ddef9cc3ad4e199e534f36b691597c56dfd16d870ab3d9c
font_03_sfnt_off0001116f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1116F 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
font_04_sfnt_off000126c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126C0 7792 bytes
SHA-256: c27373dd88b87f28fbbbf51997378822a27101e10ade427b51b96582b384bdf1

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