Malicious PDF — malware analysis report

Static analysis result for SHA-256 698cfeb0f9978c09…

MALICIOUS

PDF

39.7 KB Created: 2020-08-04 03:54:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b48706470fb48590caedbe4745bfa262 SHA-1: fbd7720a3dc5ef5c08bbda674a9fb5601a9d9c98 SHA-256: 698cfeb0f9978c0969d1a00652eb3e95d6f464be9e5865418b90a7338970377b
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious link farm, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The document body, though heavily obfuscated, contains URLs that are part of this redirection scheme. The ML classifier also strongly indicated maliciousness.

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=mario+benedetti+te+quiero+pdf In PDF document text
    • http://files.clydepartinmoncoinc.com/uploads/1/3/1/4/131437018/mutokotew.pdfIn PDF document text
    • http://files.santacruztrackclub.com/uploads/1/3/1/6/131637177/9c48df3b6816a3c.pdfIn PDF document text
    • http://files.johnwittejr.com/uploads/1/3/2/6/132682851/ffb3034.pdfIn PDF document text
    • http://files.unitetheminds.com/uploads/1/3/0/7/130739449/nowisirumawakudefoga.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/1/0433/0127/3758/files/jiniko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0683/4334/files/nuduvep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3334/6719/files/dawubowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6129/6790/files/lovosoduta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3396/8287/files/57141178440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3331/3958/files/pogozete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/8434130659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2581582401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/bewosogopewanajadometotis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/22394162669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9633/4753/files/24274566026.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 7

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_off00005d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2E 5096 bytes
SHA-256: ae2295608ab178d7283e3fb018e135540d1f14b2f2a9f8a23c87c62ca0c0d72c
font_01_sfnt_off00006e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E95 10480 bytes
SHA-256: 1e23e066a702fa444c536a86397025ca75ebd205f05a6fa4544b963f0e9685cf

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