Malicious PDF — malware analysis report

Static analysis result for SHA-256 54f53747495ac8a5…

MALICIOUS

PDF

108.3 KB Created: 2020-11-11 14:12:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 51a02b000f31a6db813982c16de96987 SHA-1: f60b891bdcd627998f6ed729f2a396222dece9db SHA-256: 54f53747495ac8a5a854e8b8bfe2874f8726be956134bda1900731747bb99876
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/wb?keyword=citation%20machine%20mla PDF link annotation
    • https://xedaliwim.weebly.com/uploads/1/3/1/4/131454603/7534926.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/3173412.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/28de6049-70d3-42c3-9086-019f8b18a520/2121539979.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bc55665-b27c-4212-ae99-ed61aed06dd3/nufibadonulalibotafok.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/olimpiadas_2020_data.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/225f3065-be0c-433f-bf1c-aa733b501e06/les_diffrents_complments_circonstanciels.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/effortless_experience_book.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/thomas_eakins_pole_vaulter.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/aomais_sport_ii_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/joxisiberafe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f51c019c-c46c-4f71-925d-dbe180766392/matowelifuterirububuwedu.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/dafixepuretukigufep.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/dragon_ball_devolution_2_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/79312699017.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016a47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A47 4672 bytes
SHA-256: 11b79bfe7065c3b16064a60797b661c916f601c77e7a397a2e7073451b839fc5
font_01_sfnt_off000179ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x179FF 12268 bytes
SHA-256: 42ba34824cc94da1b8a49df1e51a8065bdad2b8c36c61243b28e3ccc17947dcc

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