Malicious PDF — malware analysis report

Static analysis result for SHA-256 7362b1f7bc7114c7…

MALICIOUS

PDF

44.7 KB Created: 2020-11-01 22:13:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f9f7914db9efe1997076ee791e8b282f SHA-1: dd375096ce5a6c7b58da39f7f492a72b51ea7332 SHA-256: 7362b1f7bc7114c7b3aa773ce75bad1dfe616f5c4cab256fa4ad9283bbb11f05
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, including one identified as a malicious redirector. The document body, though partially corrupted, contains text suggesting a lure for a 'Polaris slingshot service manual download'. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to malicious sites, likely for phishing or malware delivery. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.ru/123?keyword=polaris+slingshot+service+manual+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4405420/normal_5f95401ce1ff1.pdfIn PDF document text
    • https://xumuxurubaxuk.weebly.com/uploads/1/3/4/5/134501003/d9e9062261b7.pdfIn PDF document text
    • https://togurekeve.weebly.com/uploads/1/3/4/0/134040335/9ab638e.pdfIn PDF document text
    • https://ralevenewuw.weebly.com/uploads/1/3/4/4/134464099/rapigubenowogedofika.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f8729ed7a60c.pdfIn PDF document text
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/349752e83.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/wunupalezozerud/franchising_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/roxifumulufixivuriridab.pdfIn PDF document text
    • https://s3.amazonaws.com/rijedifatufod/58352577635.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/astaxantina_antioxidante.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/jobezamirepinomex.pdfIn PDF document text
    • https://s3.amazonaws.com/gonuxiwela/31282293205.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/54732033522.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/bjork_human_behavior_video.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_off00006fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE2 5504 bytes
SHA-256: b682a408c9d6ea4714224ba3047d02da7db0d5e2a72688b08ee58bf5c6b9352f
font_01_sfnt_off00008282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8282 10332 bytes
SHA-256: 5329eeff83951eb96f243da7809b07326314acf575da1ce95d583f2c0b83e493

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