Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a6c82980fae33cd…

MALICIOUS

PDF

66.8 KB Created: 2021-03-01 11:54:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 012c06508eec6df2a2c7efd8a8d8abf6 SHA-1: 6cc9b73fe2938dd17b5098b99015010c0359d0bc SHA-256: 1a6c82980fae33cd5cb90e1d2638e33a028daf3210d121535edd0c7c6ea46125
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://midufefew.ru/wix?keyword=lab+periodic+trends+answer+key PDF link annotation
    • https://cdn.sqhk.co/pemejurove/pvhjgd5/nudemubanesalasezebikebe.pdfIn PDF document text
    • http://bilkaita.space/raghuvaran_b_tech_movie_hdswk6k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368479/normal_5ffeba93c09a4.pdfIn PDF document text
    • http://hookup154.site/42291667967u6m68.pdfIn PDF document text
    • https://cdn.sqhk.co/bonirixa/PGGggge/us_gas_price_per_liter_conversion.pdfIn PDF document text
    • https://vurovovi.weebly.com/uploads/1/3/4/0/134040995/18fada64c97aab9.pdfIn PDF document text
    • http://idealsit.fun/why_labour_pain_is_badykbiv.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/IiflhjF/pobawikomepebivorogobog.pdfIn PDF document text
    • http://lesantyqas.online/hoverboard_power_cordm8whh.pdfIn PDF document text
    • https://cdn.sqhk.co/xufatirumina/ahajiZq/50815039103.pdfIn PDF document text
    • http://opros.xyz/ladexopaloxesopedipo3ch65.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/gitipelut/persian_to_urdu_dictionary_free.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/suvabetatedikekoja.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/open_water_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/92635223315.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_off0000c9df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9DF 5376 bytes
SHA-256: 1dc5db7a809b277051369374b6cd67db381b9694b4631005cd4233a8db2a150f
font_01_sfnt_off0000dc4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4D 9984 bytes
SHA-256: cd57c73c78637376dbca65e6a10c0de0daf3beaa26b2e42ad14659ab6c8ba3f1