Malicious PDF — malware analysis report

Static analysis result for SHA-256 9125fdc6d19714b1…

MALICIOUS

PDF

48.4 KB Created: 2020-07-31 12:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d3f59753e995b6c4f2748368602d2139 SHA-1: 764470166768fe3445def55db1a27d280f2a4c1e SHA-256: 9125fdc6d19714b14044ef0353610c1afa8580c832bec053363b0f0bee62e748
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with one identified as a malicious redirector pointing to 'ttraff.cc'. Another heuristic indicates a link farm structure, with many links pointing to Shopify domains, suggesting an attempt to obscure the true destination or leverage legitimate platforms for hosting. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the presence of malicious links indicates a likely phishing or malware delivery attempt.

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=introduction+to+boundary+layer+meteorology+stull+pdf In PDF document text
    • http://files.stephaniecreaghan.com/uploads/1/3/1/4/131406893/19e84469.pdfIn PDF document text
    • http://files.davonloeb.com/uploads/1/3/1/0/131070792/2561265.pdfIn PDF document text
    • http://files.allanenv.ca/uploads/1/3/0/7/130775503/86044.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/1/0436/1525/6738/files/dojarefumufemizepizukabot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8780/7129/files/5062076764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/64320576959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1241/5907/files/bizibutonovedujebez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6499/0632/files/fobamaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1905/0908/files/bulabazopugebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2033/6807/files/30608554922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/5035320675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1442/2677/files/93085412798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5541/5445/files/76015034620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3802/3586/files/43348543834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3854/files/duzefitatutokad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/65819144976.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 6

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_off00007e30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E30 5536 bytes
SHA-256: 77c05f294347c5f13a07e7b7ad59398a21c16d5de2743878d149c48dfe3b1247
font_01_sfnt_off000090ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90ED 10268 bytes
SHA-256: e7f751fb7684547456ce22d29bae8a7efe56e038c23563479f010069290ffb32

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