Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7ab07dce787adf0…

MALICIOUS

PDF

72.5 KB Created: 2021-02-14 21:55:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a4da23de359551b8bd42fda90fbcfce2 SHA-1: 612a413a2fcc75cdb8b678e518755b2a54cecc68 SHA-256: f7ab07dce787adf0f3a967adbfd2edd9919fa851229cf1a430149df9743ebd1f
186 Risk Score

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://jottigo.ru/wix?keyword=14c+fatty+acid PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4401703/normal_5fe589da94a24.pdfIn PDF document text
    • https://cdn.sqhk.co/gapekozuwa/ge375jf/55003717046.pdfIn PDF document text
    • http://complerbnp.com/arthdal_chronicles_episode_18_freejn07b.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/Qkidji8/vomiting_covid_child.pdfIn PDF document text
    • http://vannabanyavsedela.xyz/wojebas702vh.pdfIn PDF document text
    • http://meetsalon.xyz/gcse_history_past_papers_and_answersb6xr6.pdfIn PDF document text
    • http://bluetea.space/walloop_hack_apkn66gu.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwuwoki/zx3uKig/dodafuvem.pdfIn PDF document text
    • https://ganokupojedozo.weebly.com/uploads/1/3/4/8/134890080/sojurawalure.pdfIn PDF document text
    • https://cdn.sqhk.co/sipobufiw/xygekgi/bijewejozus.pdfIn PDF document text
    • https://cdn.sqhk.co/zipirevofu/jiWgiid/pure_flix_price.pdfIn PDF document text
    • https://bivejeweki.weebly.com/uploads/1/3/4/3/134322338/kegadiw_batozizezele.pdfIn PDF document text
    • https://cdn.sqhk.co/puzafusabuw/dhcjcgj/the_seven_deadly_sins_grand_cross_apk_jp.pdfIn PDF document text
    • http://fredo.run/nuwabogawiwofodadovolodbpl.pdfIn PDF document text
    • https://mulokigapasol.weebly.com/uploads/1/3/1/0/131070847/rowatax.pdfIn PDF document text
    • http://fitness-ital.fun/middle_cerebral_artery_anatomyciz72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471686/normal_6015102358562.pdfIn PDF document text
    • https://vovavurag.weebly.com/uploads/1/3/0/7/130739927/liborugowa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468267/normal_5fe0fb5d96645.pdfIn PDF document text
    • http://tehnopolis.org/chandu_ke_chacha_ne_free9cfnt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE099 4856 bytes
SHA-256: 6ba0098672a5683e5d674bac463cf600e728066160fd55b3dc0324b0652ba229
font_01_sfnt_off0000f14b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14B 10488 bytes
SHA-256: dfe925eee57a02aa3720db2ee559b6357d9fb95d35b571a116e54d4bd44537d6

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