Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb7d5fd2184681a5…

MALICIOUS

PDF

74.2 KB Created: 2021-02-17 08:28:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 1f048870afbcdcf742df7800f892d9b7 SHA-1: 0d1ae5cf1c82afe7232338c409c4f9cbf5b59fad SHA-256: fb7d5fd2184681a5c06895be88084fb62526d3b7f0f6a4f97809bfbe2bf59c80
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. The embedded URL points to a site that appears to be a lure for game-related content, likely to manipulate search engine results or redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and link farm behavior suggest an attempt to drive traffic to potentially harmful destinations.

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://jacksth.ru/wix?keyword=minecraft+tower+defense+2+unblocked+games PDF link annotation
    • https://falatunasozenu.weebly.com/uploads/1/3/4/7/134762474/1226361.pdfIn PDF document text
    • https://cdn.sqhk.co/runusamopit/hcii6EZ/dujijov.pdfIn PDF document text
    • https://renixopofofof.weebly.com/uploads/1/3/4/4/134486295/fimenofusipawu-rezokogisufeke.pdfIn PDF document text
    • http://fuzuxozexuvir.22web.org/adverse_reactions_metformin_hydrochloride.pdfIn PDF document text
    • https://cdn.sqhk.co/fabunavaxa/QjcjiML/18818636579.pdfIn PDF document text
    • https://nosuzodudoj.weebly.com/uploads/1/3/4/5/134588086/pemaz.pdfIn PDF document text
    • https://cdn.sqhk.co/vopufepivipe/igheWig/red_blue_fire_background_hd.pdfIn PDF document text
    • https://dunopupusegujuz.weebly.com/uploads/1/3/4/3/134348927/rolutofata_wepasud_busim_pegaj.pdfIn PDF document text
    • https://lisebilapuwuw.weebly.com/uploads/1/3/4/0/134096741/52ae6b3a24eb8.pdfIn PDF document text
    • https://guvepilafofifiv.weebly.com/uploads/1/3/4/6/134682232/xazimobabilona.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/ePia7jc/samsung_notes_not_working_properly.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jeponowon/ableton_live_9_samples_free.pdfIn PDF document text
    • http://jedirolin.rf.gd/how_to_perform_calculations_in_ms_access.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/selenium_automation_estimation_template_xls.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/96723962945.pdfIn PDF document text
    • https://s3.amazonaws.com/dogevazapiwediw/closed_syllable_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/pobexagoditupi.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/sikkens_cetol_srd_application_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/69870431606.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DE 5656 bytes
SHA-256: 3e6c46c4b1b9dcba1ba69d12c3058db70acecadfe1b9a69bfee89e7777b3f6f2
font_01_sfnt_off0000ea1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1B 10304 bytes
SHA-256: d55a019b57ce51365438649f5ccc7fb05b65ba279bbaa21944eb4f237be2a2f3
font_02_sfnt_off00010d1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D1A 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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