Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7412e567a690fa8…

MALICIOUS

PDF

79.4 KB Created: 2021-03-29 07:57:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a140f452bd48a1b91cfdc23f19578388 SHA-1: 5b8c3cafb8001c94e25ad9aa62c1f13aaa305b03 SHA-256: f7412e567a690fa8e72863f6e751f6cd48d8df7becd5d4a06d14f023b887f7fa
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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://soxebez.ru/wix?keyword=my+time+at+portia+meat+recipes PDF link annotation
    • https://nixejovebomir.weebly.com/uploads/1/3/1/3/131380485/faxofavisak.pdfIn PDF document text
    • https://wofixoxabovu.weebly.com/uploads/1/3/4/5/134524794/gisepi.pdfIn PDF document text
    • http://sumavefomomag.22web.org/vosorubuwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456393/normal_605c42e53862d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479254/normal_5ff55bd7bbf16.pdfIn PDF document text
    • https://cdn.sqhk.co/baxewoxevum/bnyTKTF/fomovevetevujijomobupoko.pdfIn PDF document text
    • https://cdn.sqhk.co/disidudi/phjhcjf/ts4_cc_maxis_match_skin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463554/normal_602d8a0d23332.pdfIn PDF document text
    • https://cdn.sqhk.co/runudori/ac6sjim/chicken_cry_at_night_lyrics.pdfIn PDF document text
    • https://wilegefozuf.weebly.com/uploads/1/3/4/3/134399327/fulenep_xowaf_fabab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460706/normal_603ddd8aa0213.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452199/normal_5fe4790a738ad.pdfIn PDF document text
    • http://rumigiwataj.getenjoyment.net/taxudeguxobibovunuvudanuj.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/TMsurg3/run_run_rudolph_lyrics_chuck_berry.pdfIn PDF document text
    • https://cdn.sqhk.co/remezebona/hdhbfie/kabozilurapaxizo.pdfIn PDF document text
    • https://wudatoguji.weebly.com/uploads/1/3/4/8/134885495/waxoj-sajugor-mevap-joduriz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://netomadutimafe.onlinewebshop.net/bodybuilding_workout_plan_for_beginners.pdfIn PDF document text
    • http://lopesexam.epizy.com/how_to_take_apart_margaritaville_blender.pdfIn PDF document text
    • http://gezexibubaju.rf.gd/free_home_expenses_spreadsheet.pdfIn PDF document text
    • http://jelunegizubu.atwebpages.com/oxitetraciclina_en_bovinos.pdfIn PDF document text
    • http://kobukapun.epizy.com/kurezazekarenu.pdfIn PDF document text
    • http://jevejizodirosaw.epizy.com/rekorotomu.pdfIn PDF document text
    • http://zokugapifixi.rf.gd/sojoganelakavuxupevik.pdfIn PDF document text
    • http://zotoputoxo.rf.gd/naija_beat_instrumentals.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_off0000f573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF573 5152 bytes
SHA-256: 53371cc06cd7118fa8d46910587f1ee39e393de1cc6c5d39da3efaea7745e5da
font_01_sfnt_off000106f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F3 12260 bytes
SHA-256: 2ed610eb055b253a448a486a3343735a12f1135c8ec657f5405c8de022bd5cee

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