Malicious PDF — malware analysis report

Static analysis result for SHA-256 2da89ce9f053c891…

MALICIOUS

PDF

42.9 KB Created: 2020-08-04 17:45:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ef7de5bf0e0ce81fe499851a8e94e766 SHA-1: d81b4edf8c2794c59b2a556a6f4af86a3935323e SHA-256: 2da89ce9f053c891b6082344b1702e54f43e1ebc171d4cc4a352aca141c6aa1b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The ML classifier strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which likely serves as a gateway to a phishing or malware delivery site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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://ttraff.ru/pify?keyword=ascites+approach+pdf In PDF document text
    • http://files.ctknj.org/uploads/1/3/1/3/131378990/wakif.pdfIn PDF document text
    • http://files.someday-l.com/uploads/1/3/2/6/132695546/e6d3e78.pdfIn PDF document text
    • http://salejojuz.lisayorkarts.com/uploads/1/3/2/7/132740930/rozarujet.pdfIn PDF document text
    • http://files.bromleyfriendsforum.org/uploads/1/3/1/4/131483009/f0ec4ef4244db.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/13413213194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4135/7973/files/konepatukedakukanekaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4644/4960/files/download_java_jdk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7708/0990/files/pajevonujesonolazibejad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9829/9813/files/lubapedogipufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/reading_comprehension_worksheets_5th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/19075726489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6640/1692/files/14145646389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1400/2587/files/veligalosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6605/7116/files/woluwubobowajisujejos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/72679813120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6980/8535/files/rotefagigiza.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6976 5200 bytes
SHA-256: 41928fd1c104eee981ec58c0f56c10a07d59d5a0808c071aef6a924d8038ebe8
font_01_sfnt_off00007b24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B24 10552 bytes
SHA-256: 0dd9edd7a860fa1957fa5b64b2a412b2aa45c6c384eee04512f383cc75341cf1

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