Malicious PDF — malware analysis report

Static analysis result for SHA-256 fab15ef9d43e4917…

MALICIOUS

PDF

68.2 KB Created: 2021-02-18 03:53:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: eee1ef0b38e995cc7e2deb4cb5cb4127 SHA-1: 9d653947c9ee13556c6bbe8a8d632e134630c508 SHA-256: fab15ef9d43e49170c39f48edf311aff5dc264ca9185f05bf721f7ccbadfd397
196 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
  • 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://jacksth.ru/wix?keyword=eddie+bauer+stroller+user+manual PDF link annotation
    • https://cdn.sqhk.co/genopeno/bvviaib/19418696912.pdfIn PDF document text
    • https://cdn.sqhk.co/wexovezojab/eHijbig/tomizemot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451033/normal_5fed4bcfac99f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487927/normal_600657f61c8e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417808/normal_5fe3e0b74fec7.pdfIn PDF document text
    • https://cdn.sqhk.co/zobelekivix/Ehcsjjs/55352854075.pdfIn PDF document text
    • https://cdn.sqhk.co/gurudulep/Iihihdd/73864179058.pdfIn PDF document text
    • https://zefinefan.weebly.com/uploads/1/3/2/8/132816158/9bce1af501.pdfIn PDF document text
    • https://funiduned.weebly.com/uploads/1/3/4/7/134773133/xipixet.pdfIn PDF document text
    • https://cdn.sqhk.co/buvovemif/ijvigBI/manager_tools_disc.pdfIn PDF document text
    • https://cdn.sqhk.co/rewazexi/Bijzhes/is_raid_ant_spray_safe_for_plants.pdfIn PDF document text
    • https://cdn.sqhk.co/kapideto/gehd8dE/one_talk_verizon_app.pdfIn PDF document text
    • https://cdn.sqhk.co/gojogefe/Xib3GJB/smart_balance_light_ingredients.pdfIn PDF document text
    • https://cdn.sqhk.co/kimejijomaki/fzghhjr/diversity_and_inclusion_jobs_los_angeles.pdfIn PDF document text
    • https://burerekubexu.weebly.com/uploads/1/3/1/3/131381452/geguzejotomibopu.pdfIn PDF document text
    • https://mavuweginu.weebly.com/uploads/1/3/2/6/132681431/6fb4225.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374373/normal_5ffc7686b8aaa.pdfIn PDF document text
    • https://cdn.sqhk.co/timugulirebu/DgiPhpZ/bimuviladusev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jejotatimub.rf.gd/78804703541.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_off0000d001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD001 5068 bytes
SHA-256: 546b15ca14ae1fbf6be3a042f6580daf93a308f4397f331eda2509b2b83cfa05
font_01_sfnt_off0000e11f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11F 10012 bytes
SHA-256: 2ac655cc6b3e740e2cb7a50f8bb9c5c881b0c6225fa5e0d0a29b4aa26e4cbfd0

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