Malicious PDF — malware analysis report

Static analysis result for SHA-256 002f91975efb136f…

MALICIOUS

PDF

69.7 KB Created: 2020-12-19 22:21:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1deb702f922de39e95800355f2964ab9 SHA-1: db9a5c0b343f811f2ac8b05bcbb61499b9854abf SHA-256: 002f91975efb136f9b3e7e280940e13b8b73671b5fe906fdabfdbaaddf1da739
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a link farm pointing to potentially malicious redirectors. One such link, 'https://gettraff.ru/aws?utm_term=breaking+bad+season+5+episode+guide', is flagged as malicious. The document body, though heavily obfuscated, appears to contain lure text related to 'Breaking Bad', suggesting a phishing or scam attempt. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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.
  • 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://gettraff.ru/aws?utm_term=breaking+bad+season+5+episode+guide In PDF document text
    • https://juzubuju.weebly.com/uploads/1/3/4/7/134703155/vababonefini.pdfIn PDF document text
    • https://paxudusumumo.weebly.com/uploads/1/3/4/3/134312151/sufapanivojirope.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419451/normal_5faa622b7a6a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464523/normal_5fa1ff6b46cd2.pdfIn PDF document text
    • https://dalovoxibezovuk.weebly.com/uploads/1/3/4/6/134615649/vetukotitini-sumogurejawi.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/40ddfa4d7f4e3e.pdfIn PDF document text
    • https://jenititufevi.weebly.com/uploads/1/3/4/5/134595561/568333.pdfIn PDF document text
    • https://kipunokazapalu.weebly.com/uploads/1/3/4/7/134774983/tetujabaxidudid.pdfIn PDF document text
    • https://xevulejokidowi.weebly.com/uploads/1/3/4/6/134680820/botezolamozodudij.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/tuxexi/dexuded.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc013b624b06a7eb3fa8a9b/t/5fcc6c6e0ab5d62febea111c/1607232622887/47062050034.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0e5fd334513fae44511d/1606225503257/50466802205.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abd906b8-4d08-4be1-ace4-7e6df7c357bd/oleary_plaque_index_formula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0482acdc-1d0c-48a8-8f83-bfd08a37e63c/dragon_ball_xenoverse_walkthrough.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/72969736088.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_off0000d2a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A6 5472 bytes
SHA-256: 24b50c8ef3dbbb66cdf8719a92e7371c21d153f6e379ea74a980ffb6e41e25c2
font_01_sfnt_off0000e54b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE54B 10668 bytes
SHA-256: d6ff23a97c8a52a819e2a0372f4be207405fbdc591bf04e14b15508d84f6d017

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