Malicious PDF — malware analysis report

Static analysis result for SHA-256 1802aa327ae4eb9b…

MALICIOUS

PDF

70.5 KB Created: 2021-02-07 22:03:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c8d629ec3736be96b41655a04901d73f SHA-1: 95d29c775403c02e6bbdbce7ed3f8c369e36fba5 SHA-256: 1802aa327ae4eb9ba50ecda6c50f6d1273d4aeb68f6bd717570b989b52b4fe24
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=acrobat%20pdf%20free%20%20for%20windows%207 PDF link annotation
    • https://cdn.sqhk.co/duzoxibuf/ieUgcib/hockey_coach_lineup_and_roster_assistants.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/ieOKDvn/action_hero_biju_songs_mp3.pdfIn PDF document text
    • http://wamuvosuvebupa.iblogger.org/adverse_drug_reaction_reporting_form_south_africa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388174/normal_5fe990269342e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447280/normal_5fc9699ee0f20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478716/normal_5fd7853090963.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445337/normal_600c9b793b7e5.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/jexlhep/wufaloriledusat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479210/normal_5fea2a033f744.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449392/normal_6005501beec85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465125/normal_5ff54542e12df.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/figugipopar/howl_s_moving_castle_sheet_music_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/54247524298.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/u_d_a_l_ka_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/58117398923.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_off0000d724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD724 5420 bytes
SHA-256: 761b1977913843956ab10a20bee00cfcc320c6b78f9625b8c08e6ad48f762439
font_01_sfnt_off0000e9ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BA 10488 bytes
SHA-256: 435bc779448c00b9260af7a2195c664499523fc8a6abc0af29a822c837970e64