Malicious PDF — malware analysis report

Static analysis result for SHA-256 58ed5658244e8952…

MALICIOUS

PDF

74.1 KB Created: 2021-02-12 18:42:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: e9011cd7667143398316efde819ddbfc SHA-1: c9b9ca6f9b5d054e96e852f64dabec267c82695c SHA-256: 58ed5658244e89529de672998ea99b18fe11ea699c3b7cddc081aefe70fdc4d0
196 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.
  • 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://seumenha.ru/wb?keyword=adobe%20photoshop%20cs6%20mod%20apk PDF link annotation
    • https://cdn.sqhk.co/letinumi/jcjaJjb/olympics_2020_dates_cancelled.pdfIn PDF document text
    • http://mx50off.info/88880121747j3m0b.pdfIn PDF document text
    • https://javedaxefu.weebly.com/uploads/1/3/5/3/135314095/16fe6.pdfIn PDF document text
    • https://popetebebulexu.weebly.com/uploads/1/3/4/3/134316921/juwosif.pdfIn PDF document text
    • https://cdn.sqhk.co/raxuzuvuluf/gjyiiXP/dudebori.pdfIn PDF document text
    • https://kejobogufepemis.weebly.com/uploads/1/3/0/7/130775396/volusemumagefol.pdfIn PDF document text
    • https://cdn.sqhk.co/jawuraxexije/dJFhcja/3049281291.pdfIn PDF document text
    • https://cdn.sqhk.co/midusuworab/kihhfif/vonugubugibuvonasud.pdfIn PDF document text
    • https://sudazevoj.weebly.com/uploads/1/3/1/4/131406082/veluzosef-kunanawub-xudix-lupanam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408333/normal_5ff3730406f83.pdfIn PDF document text
    • https://nuwusiran.weebly.com/uploads/1/3/5/3/135321198/bujumixusinij-xosajorosolumum-finamalivebuv.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/lemefofutomapox/ap_grama_sachivalayam_results_2019_date.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/82427703602.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/86960801619.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/5423674363.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_off0000e595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE595 5532 bytes
SHA-256: 8438a6c706d90b7cb2b75be89aff9af9b3e65469a3a69db2bc545d015721b066
font_01_sfnt_off0000f83f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF83F 10436 bytes
SHA-256: 3b8814c362d8749507ea2de1ded09b4c6673cae7f82c8ef4bbb96630765e9ef3