Malicious PDF — malware analysis report

Static analysis result for SHA-256 80fad91a51b6c9fc…

MALICIOUS

PDF

75.9 KB Created: 2021-03-11 22:19:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a491f9eb6bef328dce24677610fd8ade SHA-1: ba96af124b314f20b58558020bcfd5711856e073 SHA-256: 80fad91a51b6c9fc08e8a7d57414a1b96e65e60cab5e45a1f8f24276ea57af37
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 0.9991

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://pelibifir.ru/strik?utm_term=how+to+fix+oven+not+heating+up PDF link annotation
    • https://cdn.sqhk.co/gituridewo/jgegcii/callaway_golf_club_sets_ebay.pdfIn PDF document text
    • http://zovitidagawas.sportsontheweb.net/23790002811.pdfIn PDF document text
    • https://fanepolareroroz.weebly.com/uploads/1/3/4/6/134666972/49381691febb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388427/normal_600d0bd56e573.pdfIn PDF document text
    • https://cdn.sqhk.co/besudamuge/gVkjejh/world_war_2_interesting_things.pdfIn PDF document text
    • https://cdn.sqhk.co/kevejonob/7rhidhi/preferred_dividends_in_balance_sheet.pdfIn PDF document text
    • http://wosozage.mypressonline.com/dudukeroreviverazagixu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499636/normal_603d0bef374ea.pdfIn PDF document text
    • https://cdn.sqhk.co/julukimesof/jbhiGBH/best_headphones_for_electric_guitar_amp.pdfIn PDF document text
    • https://lobubanir.weebly.com/uploads/1/3/2/8/132814664/9892353.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475728/normal_601736c6e106f.pdfIn PDF document text
    • http://xorimomupajo.scienceontheweb.net/are_peavey_amps_made_in_usa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369520/normal_6049b33370438.pdfIn PDF document text
    • https://gojenejanoz.weebly.com/uploads/1/3/0/7/130739654/sugufulele-gedemudum-jiropip.pdfIn PDF document text
    • https://cdn.sqhk.co/fidakasari/gchhEgf/39139200314.pdfIn PDF document text
    • https://vejiledulibona.weebly.com/uploads/1/3/4/3/134318828/699de2392d.pdfIn PDF document text
    • https://xaxazusilu.weebly.com/uploads/1/3/4/7/134757455/fexofatajesevipi.pdfIn PDF document text
    • http://zakosemej.mypressonline.com/60877674411.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f904ef53-caa1-4f0f-8a97-c50675c03ece.filesusr.com/ugd/2f8cea_608a805cf7614916a85ab3c6c71ab8c9.pdf?index=trueIn PDF document text
    • http://duvodix.myartsonline.com/long_john_silvers_menu_popcorn_shrimp.pdfIn PDF document text
    • https://c2267750-1f6d-4c2f-944a-eb302c7f07d7.filesusr.com/ugd/93971e_557925f192404df9b3c164a0ae033a11.pdf?index=trueIn PDF document text
    • http://tafiwepamubov.atwebpages.com/resin_hedgehog_bookends.pdfIn PDF document text
    • http://tiluxusimutine.atwebpages.com/how_much_do_corporate_communications_specialist_make.pdfIn PDF document text
    • http://tirisesu.onlinewebshop.net/rakuwikagag.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_off0000ecab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECAB 5040 bytes
SHA-256: 20ac182418a39ac577e9b9d16d2a9b5231f953b006984d4af92aeae3fdfba160
font_01_sfnt_off0000fdf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF7 10504 bytes
SHA-256: 9426d921965700ede40670682c531078905e9d2c19ccdf8449179b36f02f3e04

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