Malicious PDF — malware analysis report

Static analysis result for SHA-256 345abfb01068f6aa…

MALICIOUS

PDF

89.1 KB Created: 2021-05-01 16:28:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a6458fe1a1280f911c09fe5d212308d1 SHA-1: 8223864a713808fa9cb0081964c7200b46005f95 SHA-256: 345abfb01068f6aaee55c5a42bb97f4b531cc3157667f0571a0c2eddbaa23d1e
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 0.9990

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://jumiwimov.ru/strik?utm_term=sansui+led+tv+32+inch+display+panel+price PDF link annotation
    • https://cdn.sqhk.co/libavesonon/KjhQjgt/lawag.pdfIn PDF document text
    • http://melofuwi.getenjoyment.net/61465622833.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449968/normal_605b6a322a5ce.pdfIn PDF document text
    • http://rebezun.mygamesonline.org/51215436193.pdfIn PDF document text
    • https://cdn.sqhk.co/bokapapukopa/cwcjaNS/40596503377.pdfIn PDF document text
    • https://gegadibiliwo.weebly.com/uploads/1/3/1/8/131871883/384877687c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491673/normal_5fff455f29de6.pdfIn PDF document text
    • https://cdn.sqhk.co/genazeres/hhjhbij/ufc_fight_pass.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365613/normal_6052b01ad839a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495034/normal_601e61d8125fe.pdfIn PDF document text
    • https://vegupixusenez.weebly.com/uploads/1/3/4/3/134318628/tibonigarilele.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/tgesW1w/family_events_today_in_ct.pdfIn PDF document text
    • http://jovasetiveduza.scienceontheweb.net/49544180503.pdfIn PDF document text
    • http://majijeniwadimu.22web.org/kerizajepetivebumuvonikeb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424007/normal_60065d90b6bf4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473384/normal_5ff435930bb1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498404/normal_603c2bc3edb91.pdfIn PDF document text
    • https://rokozozo.weebly.com/uploads/1/3/4/4/134498035/welujepemoxos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475734/normal_5fe3359fb4723.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://nakarajibap.myartsonline.com/how_to_replace_a_ge_mwf_refrigerator_water_filter.pdfIn PDF document text
    • http://kujavuven.epizy.com/wing_chun_wooden_dummy_used_sale.pdfIn PDF document text
    • http://kakikokipuz.rf.gd/wanuvamebitazapawenikewo.pdfIn PDF document text
    • http://zizajurowetomej.epizy.com/harry_potter_8th_book.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000faea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEA 5724 bytes
SHA-256: 83d6cafd48e4003ed4e380e688e291820077ff7ee3933805c5e8a389bfc8260d
font_01_sfnt_off00010e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E69 11360 bytes
SHA-256: 51eac0b182e86ccf60f3b136e4b1cc9e2396b40126778a2f06fe9ea0cdcf84d3
font_02_sfnt_off00013519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13519 9912 bytes
SHA-256: 3bed852ef865de4d618fb72a1e6afbb4c6fb8541ff095ae818605a53a6fd517a

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