Malicious PDF — malware analysis report

Static analysis result for SHA-256 9378a76ab66a3fe1…

MALICIOUS

PDF

69.0 KB Created: 2021-02-04 20:29:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1ac34b449b9a48b1a56fc091c18b5e92 SHA-1: cfd9f281a59a5e47ed8b0ab7107b1834238064d9 SHA-256: 9378a76ab66a3fe1269ab24ad3448cfce6cb9c6ca947a1aee147e0c55fd6f00c
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=deductive+reasoning+questions+with+answers PDF link annotation
    • http://pimadukemaxi.22web.org/favourite_song_cue_card_sample_answer.pdfIn PDF document text
    • https://cdn.sqhk.co/gegojagakexu/idHidhf/9853445910.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467950/normal_5fc6ff4a8a377.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426820/normal_600eb7097ea6e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381320/normal_5ffa8423e4ab1.pdfIn PDF document text
    • https://cdn.sqhk.co/lowilufape/4YZNpD7/97586413739.pdfIn PDF document text
    • http://luzomatuv.iblogger.org/nugogufepimevirud.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/faxaxos/cute_animated_girl_wallpaper.pdfIn PDF document text
    • http://tinijev.epizy.com/guided_access_samsung_j3.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/xunewuderini.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/damuworixa.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/mozimurixo.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/d_c_r_full_form.pdfIn PDF document text
    • http://jerasopel.epizy.com/83970223319.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/dilezanomagubugekodipiw.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_off0000d17d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD17D 5448 bytes
SHA-256: 15e8237749d89961b65656688a6867ba8acc9d3eb6cb5dc00eff1697de6ad425
font_01_sfnt_off0000e40e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE40E 10316 bytes
SHA-256: 66c33fb810cb545d707658d975dde8b2f18bfef6166cbd73fe0a9a5320aaa115

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