Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e5143699e34a695…

MALICIOUS

PDF

92.2 KB Created: 2021-06-01 15:19:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 9210f316c0af81b800295637ac018b9e SHA-1: cfaf0fe7cf6bcc3c7136926c021c26f0a0c92c31 SHA-256: 6e5143699e34a6952286966e4a54bf923635bd9da3ccfa75f1d1528b0423b972
186 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which are hosted on disposable domains and appear to be part of a link farm. The primary lure observed in the document body and associated URLs is related to 'Dragonvale free gems hack'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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://nomylo.ru/pbw?utm_term=dragonvale+free+gems+hack PDF link annotation
    • https://jusodudefepad.weebly.com/uploads/1/3/4/6/134650432/398749bfdc2d.pdfIn PDF document text
    • https://jatuxifukonexe.weebly.com/uploads/1/3/4/4/134469885/7446641.pdfIn PDF document text
    • https://morozosewiveloz.weebly.com/uploads/1/3/4/3/134387595/dejakop.pdfIn PDF document text
    • https://xuxedujuwa.weebly.com/uploads/1/3/5/3/135345360/2393969.pdfIn PDF document text
    • https://pizotiwedif.weebly.com/uploads/1/3/4/8/134868845/fegejulebodexo-kutunorewuki.pdfIn PDF document text
    • https://kunudixi.weebly.com/uploads/1/3/4/6/134667289/1255928.pdfIn PDF document text
    • https://nagozexifetuli.weebly.com/uploads/1/3/4/3/134340384/ganiripik.pdfIn PDF document text
    • https://zukixuvaxetili.weebly.com/uploads/1/3/5/9/135988851/a443c5df8c68f.pdfIn PDF document text
    • https://baliwiwun.weebly.com/uploads/1/3/1/3/131380001/3354124.pdfIn PDF document text
    • https://fawitazekivaji.weebly.com/uploads/1/3/1/4/131454143/6517753.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/ede51310-6102-41f5-8b28-771ad3ce682c/best_stock_market_books_quora.pdfIn PDF document text
    • http://vajaxasave.pbworks.com/f/how_to_pair_soundbox_pro.pdfIn PDF document text
    • http://zilebunod.pbworks.com/f/vugejubige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcf8231f-f80e-4401-af37-f5b00cad35e9/nuxazunupamipasagixorax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d294d9c5-3ae8-4352-bc99-fb371b84f198/samsung_rf263beaesr_ice_maker_troubleshooting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cf84be4-678b-474b-856f-6529357a30bb/the_apple_cider_vinegar_miracle_susan_patterson.pdfIn PDF document text
    • http://jajafad.pbworks.com/f/como_conseguir_diamantes_en_free_fire_gratis_sin_aplicaciones_2020.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_off00012cfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CFA 5416 bytes
SHA-256: 01f8fe8a1fd3ccbbfe9db57050c850f4001acb79b1d94f94a8efdbe293849cbe
font_01_sfnt_off00013f51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F51 10776 bytes
SHA-256: 395cb0ed53a006f9e0978a46b917c9af345c14d36566d638ab2e436711777bb1

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