Malicious PDF — malware analysis report

Static analysis result for SHA-256 e29ddcfae83d7832…

MALICIOUS

PDF

66.9 KB Created: 2021-02-21 02:24:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3ee28a896d0159b55d7c262f09256e5f SHA-1: 7f0f3068910bce0b81816e71511abde0674669c6 SHA-256: e29ddcfae83d78323ea7d55c1badc1ebcc768784213c34eb26fa196be18002fe
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=module+4+quiz+answer+key In PDF document text
    • https://mugokirupela.weebly.com/uploads/1/3/2/6/132681863/036ff.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/thdsibI/search_wikipedia_using_python.pdfIn PDF document text
    • https://cdn.sqhk.co/kigowabalo/HjePiiS/irancell_apn_hotspot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380680/normal_601667895402d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421788/normal_600960f64c17b.pdfIn PDF document text
    • https://cdn.sqhk.co/leporolino/ejG6g7W/naxeex_superhero_game_play_online.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/MfzShhn/29258138033.pdfIn PDF document text
    • https://cdn.sqhk.co/japivuwali/aNShgLw/bufikilisinemijuxag.pdfIn PDF document text
    • https://cdn.sqhk.co/kosenopelid/hagEkgj/cher_and_sonny_bono_costumes.pdfIn PDF document text
    • http://2220202.ru/the_far_side_of_the_moon_were_able_to_seenxycz6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486351/normal_5fe76d3a8824b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fizefitelibulob.epizy.com/taylormade_r15_driver_head_weight.pdfIn PDF document text
    • http://tuxesoguzegisox.epizy.com/fake_caller_id_apk_dow.pdfIn PDF document text
    • http://ronufoju.epizy.com/chhello_divas_2_full_movie_free.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_off0000caf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAF2 5344 bytes
SHA-256: c0bfbef0dd87216146a53ecfadb6e3f250ad3860e9aabb47fc2db182248b3945
font_01_sfnt_off0000dd59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD59 9912 bytes
SHA-256: 37e21c34870a905887f546529d9f06d6df5be80fc9c3554faae06974b7636887

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