Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a25c414176aecb3…

MALICIOUS

PDF

67.2 KB Created: 2021-02-28 15:25:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 977fb188c097eba06e2fcbef84bf6975 SHA-1: fa5f88b327fa2610593ad229b150aff7c550789d SHA-256: 2a25c414176aecb34697712937a8a3cf363e86fdddc531f04edd2489e09f2f23
254 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
  • 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.
  • 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.
  • 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://dafemum.ru/award?keyword=you+before+me+netflix In PDF document text
    • https://cdn.sqhk.co/nebafori/gfN8mhg/getty_images_contributor_sign_up.pdfIn PDF document text
    • https://cdn.sqhk.co/bupabumo/7jdw8mU/sedosononijagipizamojapi.pdfIn PDF document text
    • https://cdn.sqhk.co/wugeguxu/bhiD7hb/gra_time_gap_hidden_object_mystery.pdfIn PDF document text
    • https://cdn.sqhk.co/zixemoliz/iaidvgd/pozejagenakukajobofitelip.pdfIn PDF document text
    • https://cdn.sqhk.co/bikakigiben/Qdidijc/balls_vs_colors_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/virurewev/bVEDggK/webipula.pdfIn PDF document text
    • https://texifafotolatip.weebly.com/uploads/1/3/4/7/134764930/xefixelek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459055/normal_5fd65c37b1642.pdfIn PDF document text
    • https://cdn.sqhk.co/vexakebano/Eidjhbc/95523084935.pdfIn PDF document text
    • https://muvekova.weebly.com/uploads/1/3/5/3/135394778/tezupevonegu_dupevilune.pdfIn PDF document text
    • https://cdn.sqhk.co/jegivoziba/haXs51j/zopavovata.pdfIn PDF document text
    • http://befotuke.mywebcommunity.org/the_daily_trading_coach_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367944/normal_5fd91ae3f3b61.pdfIn PDF document text
    • https://cdn.sqhk.co/kunimoxifagi/igfhbN0/xozokijepuwunelu.pdfIn PDF document text
    • https://cdn.sqhk.co/pabefidinaz/ghjhiwv/top_hits_2020_video_mix_clean_download.pdfIn PDF document text
    • https://cdn.sqhk.co/lexoxuxoluvi/g2qiftp/beholder_2_ios_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455914/normal_5fdb3b954b4df.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_off0000cd15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD15 4696 bytes
SHA-256: d491fc4a79d46c9b566169d695c4e60bc5457f66a5fd1421424ff000cc99b1eb
font_01_sfnt_off0000dcfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFC 10288 bytes
SHA-256: 3a71316394ff7ba2bb0ab3b5a5ce68313f6a2748c3919f3fd6535176e8490f23