Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e00a418911d2be2…

MALICIOUS

PDF

66.6 KB Created: 2020-11-11 14:59:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 2b6eb3ed1c618b5a3b9a7e709dfee2f9 SHA-1: 6e6366f391d20a0501d9fe95d95d0a84b16f0d22 SHA-256: 0e00a418911d2be2ee1cd3c441c97cc3ee401d140b1c8b932f5dd442827cd498
214 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and an ML classifier, specifically flagging it as a redirector and part of a link farm. The embedded links, such as 'https://traffine.ru/aws?utm_term=panasonic+tv+user+manual', likely lead to phishing or malware distribution sites. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create SEO-optimized PDFs for link farms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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://traffine.ru/aws?utm_term=panasonic+tv+user+manual In PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/wunotarulekojukibat.pdfIn PDF document text
    • https://firerokuk.weebly.com/uploads/1/3/1/1/131164187/nesemojiwovinudub.pdfIn PDF document text
    • https://vubinejenifa.weebly.com/uploads/1/3/4/4/134444695/pawapope.pdfIn PDF document text
    • https://kesudidudoj.weebly.com/uploads/1/3/4/4/134477594/2157406.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/bosajewowoj_rubuvakun.pdfIn PDF document text
    • https://jixidaku.weebly.com/uploads/1/3/4/4/134495137/7878606.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/16188123677.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/67611172651.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/gagixotuji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20de1665-0621-40f0-8a36-bbf722c5c9eb/75934483170.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/manazudadadev.pdfIn PDF document text
    • https://s3.amazonaws.com/vasagesorajirem/mewesatisufij.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC975 5004 bytes
SHA-256: 8231fe39dc49ba436ca96d4d605ada55cb3bcbcf2e4aacd8c11419443e3de7fd
font_01_sfnt_off0000da68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA68 10428 bytes
SHA-256: c8917986f1ebb0179906487545ae095a2d5b427560628bcf85d3ab84aa6772ee

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