Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e09f0002e7261cd…

MALICIOUS

PDF

83.8 KB Created: 2021-01-02 13:04:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: eec54ce2909e8556b6abace933ee4750 SHA-1: 2ad58471860aa4bece712a8d04965ad9199594f7 SHA-256: 8e09f0002e7261cd8980fddc82ab2c4a8e97e436f293917041a4416a5cdf6334
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious content. The presence of external URIs and a link farm suggests an attempt to redirect users to malicious sites, likely for software piracy or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffi.ru/aws?utm_term=utorrent+pro+mod+apk+onhax PDF link annotation
    • https://texatejoluneb.weebly.com/uploads/1/3/5/3/135318687/cc4184339097.pdfIn PDF document text
    • https://cdn.sqhk.co/zudipoje/jaShfBG/ministry_of_silly_walks_watch_ebay.pdfIn PDF document text
    • https://cdn.sqhk.co/venujotiwufo/YWlAgy5/62794708270.pdfIn PDF document text
    • https://cdn.sqhk.co/zurefaxenov/giKgdjf/21240280220.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/iiGOe19/maps_for_mcpe_1._14._30.pdfIn PDF document text
    • https://cdn.sqhk.co/xalurubizud/jihjtji/mamojulixiberuxu.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/pululusodogi/kidemeketalifenopagufewax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d2bbad0-f85b-495b-ad7d-120cfcd2690d/the_night_of_torrent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edc96908-bdf6-4cb9-b2d8-7fb6eda7550f/whirlpool_cabrio_washer_error_code_f51.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/jll_india_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/tomb_of_sargeras_raid_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/fancy_pants_adventure_premium_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/fazikuzepewuwigos.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE612 4852 bytes
SHA-256: a7348e1295a86a56eb2f9813413a63cf5903dfe78e65abac4d3f0386a46da7a0
font_01_sfnt_off0000f658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF658 11224 bytes
SHA-256: 74ede3f12ab894e6f1810bd19edb3aa55ab5388d17cb59d4ddc03767f1c31cfd
font_02_sfnt_off00011d2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D2B 16204 bytes
SHA-256: 1873fa7a539ff00c8c1392723f18eb1e977adbfda941d447d459c5f21b93b389
font_03_sfnt_off00013282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13282 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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