Malicious PDF — malware analysis report

Static analysis result for SHA-256 069bf20a7b8a17ef…

MALICIOUS

PDF

84.9 KB Created: 2020-12-27 17:04:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 78deaa7305d7790d94a3b2fd10b0d57d SHA-1: e175447b9270dd0bdcac06bf708eb3831a666f43 SHA-256: 069bf20a7b8a17ef5388edf63f762c5d4563f7393e946ae8b3034ff19b8125e4
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file exhibits malicious characteristics, including linking to known malicious redirector infrastructure and participating in an SEO link farm. The primary URL, 'https://traffking.ru/strik?utm_term=drums+sheet+reading', is identified as a malicious redirector. The document's structure and embedded links suggest an attempt to phish users or distribute further malware under the guise of a free download. No scripts were extracted, but the PDF's nature points towards a phishing or malware distribution vector.

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
  • 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.
  • 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://traffking.ru/strik?utm_term=drums+sheet+reading In PDF document text
    • https://cdn-cms.f-static.net/uploads/4462038/normal_5fd34e4f84647.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369646/normal_5f910386e62e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443804/normal_5fa1eb19db808.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425908/normal_5fa5e3658d27a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478683/normal_5fadd9715bf40.pdfIn PDF document text
    • https://gixisinada.weebly.com/uploads/1/3/0/8/130814349/vezosobajusivopek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419433/normal_5f9e37c998005.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419452/normal_5fd9ade991cc3.pdfIn PDF document text
    • https://zuberexuwaxif.weebly.com/uploads/1/3/4/5/134501439/536671.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c17fb740-49fa-4ef5-94a4-b6c2c506dee8/dopexidukovisufame.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/african_imperialism_dbq_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0aa26912-b945-46e7-9fe2-e7ad20a9e2df/wiwovojolaka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b4f3ea3-b52a-41f5-a3d4-e08f4e115aa9/zawuxunamasijabojexid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3173d1e-5f8b-4534-a4b6-eea73aa0bc38/the_lost_world_jurassic_park_epub.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_off0001122b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1122B 5204 bytes
SHA-256: f51d1ba53c9b4421fb52a8126a7dc6b7f0c93be84a0904b1c110b3c2b7e5d4db
font_01_sfnt_off000123b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123B2 10436 bytes
SHA-256: 135b2cf3c811b044b2de524c1276a2f87f6e099a39bfadd1c7777826544c4933

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