Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbfb9e35dbd4fbec…

MALICIOUS

PDF

41.4 KB Created: 2020-08-14 16:15:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b7202038ac3ebd618c711c219f7fbed SHA-1: 30e689c0040b5ced514579383b09f3a7b79e3f34 SHA-256: fbfb9e35dbd4fbec739d11fa49c5ffe04822e57fc16d62e468be9c7a2a357585
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body contains numerous embedded URLs, including a suspicious one pointing to 'ttraff.com', which is known for redirecting to malicious content. The presence of a large number of external links suggests a campaign to distribute malware or conduct phishing.

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.com/pify?keyword=blastula+formation+in+frog In PDF document text
    • http://files.killastylez.net/uploads/1/3/1/4/131414743/996a953e.pdfIn PDF document text
    • http://datezola.lifestreamfamilywellness.com/uploads/1/3/1/1/131163635/9f54daf.pdfIn PDF document text
    • http://files.perfeccionatupiel.com/uploads/1/3/1/4/131438477/tijadu.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/1/0448/7141/8018/files/lujeduxos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/dokesivupikunakimozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96226605796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7752/4888/files/gubafede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38743570217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4511/7342/files/quality_assurance_files.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/24674678630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3290/3829/files/nepawofataf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6965/9549/files/dnd_races_all.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4823/8242/files/2373743165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0508/3811/files/komabubafuguf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9577/7699/files/41527155679.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 3

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_off0000658b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658B 5136 bytes
SHA-256: 446014ac3c9218df095f6ab2930bc499e9ce1f3c203714cd2672584fcca9d022
font_01_sfnt_off000076e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E7 9980 bytes
SHA-256: da7e1f310856e2c404cce7b48ee72ca68f0bc68d82c827259a9403e91cdf622e

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