Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d0f0c1db9282004…

MALICIOUS

PDF

88.2 KB Created: 2021-09-13 20:32:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 57206c0ada691a84883b2313a69c2b54 SHA-1: a9fc94653c6fecbfd0668052f86e324bd5fa4025 SHA-256: 3d0f0c1db92820045440507870fa1596861aa2a1d335237367a8c3afb1d56da1
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external links, many of which are hosted on disposable domains, indicating a link farm designed to distribute malicious content or phish users. The presence of embedded URLs and the nature of the heuristics strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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 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.
  • 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://wastran.ru/uplcv?utm_term=justice+league+season+1+subtitles
    • http://xn--80aamwn.xn--p1ai/userfiles/file/56677420958.pdf
    • http://ttfi.org/app/webroot/userfiles/file/36011605406.pdf
    • https://rajakedua.com/contents/files/88599000702.pdf
    • https://jajugroup.com/ckfinder/userfiles/files/88328549519.pdf
    • http://mariopresto.pl/userfiles/file/87116485021.pdf
    • https://curtain.jinware.com/upload/files/67857096226.pdf
    • https://prokoncept.hu/admin/blogfck/image/file/ruwofulenidemebobekeline.pdf
    • http://tvsatkrosno.pl/userfiles/file/tokeb.pdf
    • https://indiantalentjunction.com/milan/media/30702416826.pdf
    • https://kccegis.com/upfiles/content/file/20210905050151.pdf
    • http://benly-carson.com/product/files/2696609386.pdf
    • http://ristoranteibucanieri.it/userfiles/files/loxaguzarugodezejuposa.pdf
    • http://zhxndl.com/uploadfiles/files/sanabotunagegijawenimag.pdf
    • https://rh-h1tapi-turbo.com/contents/files/52605128761.pdf
    • https://perfumes.dropship-tracking.com/userfiles/files/38401045372.pdf
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/64a262fd43ef304be988574801e9f001/58129449905.pdf
    • http://markaoyun.com/calisma2/files/uploads/xenezijisoxuvipevezijob.pdf
    • http://yanartekstil.com/firma/files/mupifuzete.pdf
    • https://bnbcostaverde.it/userfiles/file/fukaxupema.pdf
    • http://www.bongbansaigon.com/uploads/files/punewavikenirinuwel.pdf
    • http://permagnet.com/upload_files/file/210909133257901365cwm20c.pdf
    • http://stagegator.scorchmark.com/stagegator/ckfinder/userfiles/files/61213713890.pdf
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/161365413305d3---1957197759.pdf
    • http://floridadressyourhome.com/uploaded_files/userfiles/files/47840927496.pdf
    • http://nurugelexport.com/ckfinder/userfiles/files/rufuvesuj.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f517.bin
22dec02e3600009e992f770f7327bc4b1c5a7beeb9b435c847772467d72d6ad3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF517 10588 bytes
font_01_sfnt_off00010d86.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D86 16792 bytes
font_02_sfnt_off00012598.bin
87d702e04fa0a23ca1384febd905d15f2a057820dbe63c147a15c0d6e512a402		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12598 17792 bytes

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