Malicious PDF — malware analysis report

Static analysis result for SHA-256 a26a98f84c1c6ac8…

MALICIOUS

PDF

77.2 KB Created: 2021-03-16 06:26:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 600f4c11d2bc504d67ad46e00b293c93 SHA-1: 947f566928033023030c793866a656fdb1109661 SHA-256: a26a98f84c1c6ac8f8982c0edb8cdd0a3934cd9ef026e051c8c3e2bb82f84ea9
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-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://baarspo.ru/strik?utm_term=pirate+ship+playhouse+plans PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4491155/normal_5fe44b6eb0e5d.pdfIn PDF document text
    • https://cdn.sqhk.co/gegenosuzun/IKjjCVf/states_using_ranked_choice_voting.pdfIn PDF document text
    • https://cdn.sqhk.co/vopuvafamiw/Ptgecgc/1174870444.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457604/normal_5fd9a6978ec42.pdfIn PDF document text
    • https://cdn.sqhk.co/toromerepowa/gxZjihd/platformer_games_cool_math_games.pdfIn PDF document text
    • http://gapagal.mywebcommunity.org/frigidaire_gallery_dishwasher_service_manual.pdfIn PDF document text
    • http://shop-kid-toys.online/daluwazapanrhvri.pdfIn PDF document text
    • http://g2am2e.xyz/degarmo_materials_and_processes_in_manufacturingy16lw.pdfIn PDF document text
    • https://cdn.sqhk.co/joxutedunik/kjhjejc/kiki_s_delivery_service_disney_cast.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492574/normal_604b850a630c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490917/normal_5ff860c84f7cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380405/normal_5ffb1d44d50c0.pdfIn PDF document text
    • https://cdn.sqhk.co/gapalagabig/EfgeP83/55056830331.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464873/normal_5fcdea3c6d848.pdfIn PDF document text
    • http://tamasolesodaj.mypressonline.com/79367255237.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefimex/xjfUmjc/81268025902.pdfIn PDF document text
    • http://summer-italy.fun/motor_oil_guide_nzrnlkq.pdfIn PDF document text
    • https://cdn.sqhk.co/ganuniwiku/hKxJxhf/train_simulator_2016_free_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414358/normal_601fd452b4c4e.pdfIn PDF document text
    • http://ooovseanalizi.ru/chhath_puja_2019_songig4h0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375352/normal_60082963097e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410989/normal_5ff89cc8ade0c.pdfIn PDF document text
    • https://cdn.sqhk.co/sadirorig/hQSViba/telemedicine_pa_jobs_california.pdfIn PDF document text
    • http://mujudesuxiropa.sportsontheweb.net/zujukamifilebagi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lapetagalelan.myartsonline.com/los_juegos_del_hambre_3_online_gratis.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_off0000f140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF140 5008 bytes
SHA-256: f6530e5eb4e8be091f56f14db44baa7f096f951948240813ab95c89443279479
font_01_sfnt_off00010248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10248 10872 bytes
SHA-256: e9306a0d4ecf30dfdf4e2b5ac0b05fb63a44a78f1a46218e1e8514ff4225a1a9

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