Malicious PDF — malware analysis report

Static analysis result for SHA-256 e389b6b1370dabfc…

MALICIOUS

PDF

79.0 KB Created: 2021-02-16 03:38:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a60a10ac69e261a2a2db94e7f78d415d SHA-1: 681c3a78b75b87e8298d32113d5a85562ffd8158 SHA-256: e389b6b1370dabfc8f37188f66c0ff18d013c0d67950a0dc79786ebe2e73f50f
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://baarspo.ru/wb?keyword=hp%20photosmart%207200%20printer%20cartridges PDF link annotation
    • http://trikotoria.ru/38408546340ztp3p.pdfIn PDF document text
    • http://7gusevshop.website/lipejetojiboxirofofebugulo9an.pdfIn PDF document text
    • https://cdn.sqhk.co/potiribuwuf/agdhiGB/where_to_buy_mobile_phones_for_seniors.pdfIn PDF document text
    • https://satizivuzaked.weebly.com/uploads/1/3/4/3/134383512/996053.pdfIn PDF document text
    • https://mopuxemunokele.weebly.com/uploads/1/3/5/3/135318458/6888331.pdfIn PDF document text
    • https://zuvofuguwapu.weebly.com/uploads/1/3/4/0/134042474/9094613.pdfIn PDF document text
    • http://gabameled.22web.org/duplicates_report_if_stata.pdfIn PDF document text
    • https://cdn.sqhk.co/fegojujor/jdibzfg/state_of_survival_codes_august.pdfIn PDF document text
    • https://cdn.sqhk.co/wabajevebe/hhtyjhs/lepomemapov.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/smjcNNN/switch_using_scanner_in_java.pdfIn PDF document text
    • https://cdn.sqhk.co/figakeves/1wHCe9k/79299046878.pdfIn PDF document text
    • https://cdn.sqhk.co/rufopunuk/Bhjj0w0/girl_next_door_netflix_documentary.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/update_android_os_on_samsung_tablet.pdfIn PDF document text
    • http://maboruj.rf.gd/42380929962.pdfIn PDF document text
    • http://donirodep.epizy.com/caddis_northern_guide_waders_review.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_off0000f799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF799 5772 bytes
SHA-256: a3bd838212c883bc67413d972d4923871639a59305a276365107715011146046
font_01_sfnt_off00010b12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B12 10624 bytes
SHA-256: efa96139c6605d53a55831106f88c56e3f804f895460b29a66976d5a4da82f0d