Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e2f2fbe326b2fa1…

MALICIOUS

PDF

73.6 KB Created: 2021-03-07 07:51:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 72f4ed4e23b62f8c10491bc3c1bf8711 SHA-1: 2cbbe418a15f21b7b4c96f68316a9085ecb07aef SHA-256: 2e2f2fbe326b2fa12a9eb405adf9a365304bbf7837e3ec9627d9774f26ae7225
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable or unknown hosting domains, suggesting a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of creating numerous links on disposable hosting, often used to mask malicious intent. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing or a trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/wix?keyword=super+unblocked+games+vex+3 PDF link annotation
    • http://cartest.pro/how_to_buy_stock_when_market_is_closed8mp2h.pdfIn PDF document text
    • http://netewe9.xyz/flying_bird_hunting_games_bird_shootersqmvsg.pdfIn PDF document text
    • http://vipadminler.org/fifty_shades_of_grey_online_legendadxtlzn.pdfIn PDF document text
    • https://xasirazabad.weebly.com/uploads/1/3/4/6/134699738/xowilobuvoxewuzeto.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457839/normal_603840dbac110.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390051/normal_5fd3afcaa30d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481988/normal_601de7f371fc0.pdfIn PDF document text
    • http://tokemiji.22web.org/61952217840.pdfIn PDF document text
    • http://dvigatel.guru/savage_tide_adventure_pathmuac5.pdfIn PDF document text
    • https://mewatejo.weebly.com/uploads/1/3/5/3/135322937/zopajulixekiw_milesuxosag_savezusakab.pdfIn PDF document text
    • http://samoe-samaya.ru/pmd_clean_pro_gold_reviewszh96t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366665/normal_603c268175b2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465719/normal_603ce638676ca.pdfIn PDF document text
    • http://telewapor.22web.org/ct_1040x_instructions_2016.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f935a266-3fba-4bba-89d1-e855cc34d44f/leviwekowozopareloliki.pdfIn PDF document text
    • https://ed21222e-fee3-4fab-8b52-e2ddb7bb35ab.filesusr.com/ugd/e73fea_43d6ed31fe6f40d782583c0c68ca696c.pdf?index=trueIn PDF document text
    • http://gobiburitumeri.epizy.com/joduwutogifawufepos.pdfIn PDF document text
    • https://d52aed46-be45-4f9b-8106-cf6fc7ee66c0.filesusr.com/ugd/b148e5_32088240e66e4edb95a7374587b8ff47.pdf?index=trueIn PDF document text
    • http://gevegure.rf.gd/best_price_roku_streaming_stick_plus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49e83a88-ae62-4787-a1c0-5e3d3d07cc03/gofodegidapepowutawemixub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/453f2c04-d4b0-4ef2-ad28-390cd6d1516a/salewebaxipuj.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_off0000e156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE156 5992 bytes
SHA-256: e9ade82e5d327e2630cc39f278f771f4267d254c427acf7845a92f0b086ba9a7
font_01_sfnt_off0000f5ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5AE 10468 bytes
SHA-256: 8670a80de1518d57e6625da7411705540d3770f60562572855ae6fcd0c5f89fd

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