Malicious PDF — malware analysis report

Static analysis result for SHA-256 079bcdd0fcd2f988…

MALICIOUS

PDF

70.8 KB Created: 2021-02-12 19:01:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2ee30e7ea0ba00412224343c5c5df0ba SHA-1: e4f1f784d5015824bded29b7eb289c925121409b SHA-256: 079bcdd0fcd2f988da9fb77732b5e880845d34090e394d9341093dba7603dad1
274 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=the+meat+buyer%2527s+guide+8th+edition+pdf+free In PDF document text
    • https://cdn.sqhk.co/tumowara/cjaic7g/cross_stitch_patterns_free_download.pdfIn PDF document text
    • https://zemedabumudog.weebly.com/uploads/1/3/2/7/132712209/5a00f.pdfIn PDF document text
    • https://cdn.sqhk.co/vedimofaw/aihBZhd/mediaf_re_free_download_for_pc.pdfIn PDF document text
    • https://bezaranave.weebly.com/uploads/1/3/4/1/134108953/c946400b2b.pdfIn PDF document text
    • https://fopizute.weebly.com/uploads/1/3/4/3/134315067/muluw-watezugexosid-finuxexuxi.pdfIn PDF document text
    • https://cdn.sqhk.co/tinipuded/ifEEihf/29535372068.pdfIn PDF document text
    • https://bamukafigozoxin.weebly.com/uploads/1/3/4/8/134861202/9e6f7fe853e8185.pdfIn PDF document text
    • https://cdn.sqhk.co/mujejadalale/VvYjak9/standoff_multiplayer_mod_apk_latest_version.pdfIn PDF document text
    • https://cdn.sqhk.co/nojumuku/jdhd3RU/28462817196.pdfIn PDF document text
    • https://cdn.sqhk.co/gegenosuzun/Doib9rE/30563752576.pdfIn PDF document text
    • https://gikotaduxig.weebly.com/uploads/1/3/1/4/131454052/3189139.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377902/normal_5ffbd6ace3830.pdfIn PDF document text
    • https://cdn.sqhk.co/zeterabaxax/aghhgcs/12707922308.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/67906TY/15661445710.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459027/normal_5fe22da800b12.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5C9 5724 bytes
SHA-256: e0a5c53f0c140d26abc546b15cdb8b7a289a204ec62496973d5149a683f7eaba
font_01_sfnt_off0000d924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD924 10980 bytes
SHA-256: 5e9d2daf528a79618efa3b9a61cfa608d9dae5cb13ade784a877c8732aed635c
font_02_sfnt_off0000fe22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE22 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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