Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e97f48cf86dd47…

MALICIOUS

PDF

74.5 KB Created: 2020-12-24 15:40:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08870c2964c79b2206e577ba4683286e SHA-1: 776e0859421258d519cfbcaaa24a460a8e791629 SHA-256: 00e97f48cf86dd47456cfcf45d1ebfd9c39825235a4d2e648ce4215bdfa00331
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple critical heuristics as a malicious redirector and link farm. It contains numerous embedded URLs, with at least one pointing to known malicious infrastructure. The ML classifier also strongly indicated maliciousness. The presence of many external links suggests an attempt to lure users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cctraff.ru/123?utm_term=unblocked+games+at+work
    • https://fozijiruzixusap.weebly.com/uploads/1/3/4/3/134317533/sesep.pdf
    • https://cdn.sqhk.co/merivexasug/ifhbgjb/you_are_god_s_masterpiece_quotes.pdf
    • https://relowuforobelo.weebly.com/uploads/1/3/4/5/134528439/gegekano-litumikusilut-xarawel.pdf
    • https://xafadefuvabajil.weebly.com/uploads/1/3/0/7/130776308/jewaridipaz.pdf
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5fba37f8b8309.pdf
    • https://kileligujet.weebly.com/uploads/1/3/4/4/134457719/20adaf.pdf
    • https://cdn.sqhk.co/fipexuwebo/R00bQku/seesaw_app_clipart.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bededuxotulapil/walmart_receipts_2017.pdf
    • https://uploads.strikinglycdn.com/files/8bbf7bd1-c499-40f2-be38-935e674e16be/3780329487.pdf
    • https://s3.amazonaws.com/kezemiradigu/cooling_tower_maintenance_checklist.pdf
    • https://uploads.strikinglycdn.com/files/f29467db-d226-41eb-b772-4da8c3031bae/fender_acoustasonic_junior_service_manual.pdf
    • https://uploads.strikinglycdn.com/files/ac367030-1b70-49c6-a7e4-b59c254289c1/cravings_chrissy_teigen.pdf
    • https://uploads.strikinglycdn.com/files/93ea4b52-a09f-4096-be95-4352bb90cf62/43036127321.pdf
    • https://uploads.strikinglycdn.com/files/07333d98-a4a7-4927-8c2c-1a07a1048fb4/what_is_hick_hop.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e59a.bin
11d1d94e54d55266ff55785396b921439a19d151c2431dd850fe1f8c27e5be39		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE59A 5544 bytes
font_01_sfnt_off0000f876.bin
12f96b394baca9d0d58a428e4a7eea9fd2006de2617cc9234a278060323b08d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF876 10736 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.