Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9c0a7593b99e8ec…

MALICIOUS

PDF

50.8 KB Created: 2020-08-01 12:25:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4306d859093453b1b64744c3d543c6ed SHA-1: 516aa7495f07ce8e8135da39d4e1f854792ffed6 SHA-256: f9c0a7593b99e8ec0b28e9bd85fb6aec9a3024f115aa2e7f8455dde0491802d7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains heuristics indicating it's a malicious redirector and part of a link farm, with a primary URL pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the string 'gmail is slow' and the malicious URL, suggesting a phishing lure. The presence of numerous external PDF links further supports the link farm heuristic, indicating a likely attempt to distribute malicious content or phish users.

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=gmail+is+slow In PDF document text
    • http://files.impactk9usa.com/uploads/1/3/2/8/132815979/nubatuxa-zotozibupi-faperaxuj-xexaba.pdfIn PDF document text
    • http://files.learningfromstroke.com/uploads/1/3/1/4/131453989/1514057.pdfIn PDF document text
    • http://files.appletreecontractors.com/uploads/1/3/1/6/131607712/9709263.pdfIn PDF document text
    • http://files.makealbertagreatagain.shop/uploads/1/3/1/0/131070178/jevowizamoradi-latijifimu-kigalasofe-tepamejunise.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/1/0430/4656/8098/files/wixusezalepesox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/22828010815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27392185694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5327/7603/files/vamokibugoratamebovudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5563/5880/files/14075920458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9059/2422/files/56947000764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7854/9665/files/21020748462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5561/2057/files/bekogubilubokadujijex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6150/0309/files/68579665196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7921/8838/files/carrier_air_conditioner_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9683/4212/files/zudojodusikapiwakejujiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0185/6679/files/tenobizopaxaf.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_off00008ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC2 4856 bytes
SHA-256: d79dfa6a5876406462fd5bee3452eba8ea7a31b1d15b9bd85957c6b2f772ca25
font_01_sfnt_off00009b44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B44 10260 bytes
SHA-256: 5b10ef16213d85983bc08f68084eb51083084d3c3b37eabfe31495ab7505137c

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