Malicious PDF — malware analysis report

Static analysis result for SHA-256 67fe371d9f6f3823…

MALICIOUS

PDF

36.2 KB Created: 2020-07-30 19:43:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e3b15a9efd84b50a3417111f448ca6e0 SHA-1: 6f7bcbadd2369df5dceb58e40ed11a7cd3727efa SHA-256: 67fe371d9f6f38235ef04212dd9087203dd93171ba16f8e4b1cb2c187db2bf7f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, strongly suggesting an attempt to direct users to harmful websites. The ML classifier also flagged this PDF with high confidence. The embedded URLs, particularly the one pointing to 'ttraff.cc', are associated with malicious redirector infrastructure, likely used for phishing or malware delivery.

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.cc/pify?keyword=a+10+wika+pdf In PDF document text
    • http://files.ashleyjoleendoulacare.com/uploads/1/3/2/7/132740172/makepe.pdfIn PDF document text
    • http://files.ummcs.org/uploads/1/3/0/7/130775649/1508060.pdfIn PDF document text
    • http://files.whareafire.com/uploads/1/3/2/7/132741339/1875995.pdfIn PDF document text
    • http://files.richmondscottishcountrydancers.org/uploads/1/3/1/4/131453713/a3054a6.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/1/0432/1837/0728/files/dorupafotatumetikek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0660/5987/files/12322311718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3222/2615/files/xiwojixusoxugariluvelalis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3531/9711/files/72560848390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1312/7844/files/lawedumivagiwusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zorosibal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9151/6826/files/motamamot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0319/9136/files/40010037778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1583/9645/files/50502018958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6097/6021/files/56793904431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65069223210.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_off000052f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52F4 4444 bytes
SHA-256: 7208adf2ffa37046a410503899ee409d5c3d60ca1527cb63f64f2439a17a33e0
font_01_sfnt_off00006216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6216 9948 bytes
SHA-256: 72478a453087e289ae2f459b43b3d40a0bbd5884268363a6c876b2e27f3347f4

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