Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd3a01c05a3f94d2…

MALICIOUS

PDF

34.2 KB Created: 2020-08-04 08:45:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fda6770f78317a898e30cef19130417c SHA-1: 14625327f6f2e39b00b296a33c67fc41437b7a7e SHA-256: cd3a01c05a3f94d2ed70d2d50b74685b0bd7715cd35ec614a02b69920e20bc9b
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is used to obscure the final destination. The document body and embedded links suggest a lure for downloading textbooks, likely a pretext for delivering malware. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent.

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=vce+textbooks+pdf+download In PDF document text
    • http://files.scrappingfairy.net/uploads/1/3/0/7/130738914/kanotuxadinivuvas.pdfIn PDF document text
    • http://files.parkerpiecekeepers.com/uploads/1/3/1/3/131379253/3141796.pdfIn PDF document text
    • http://files.jumbotreatzbooth.com/uploads/1/3/0/7/130775677/1335351.pdfIn PDF document text
    • http://files.glamourembalmer.com/uploads/1/3/2/6/132681560/8188632.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/1/0434/6894/7616/files/jekemogigetedudurejirake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5657/0266/files/folavikitaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/pedotabogibunapuzupugen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3097/7431/files/sojaperodetixul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9181/2767/files/51259288443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/miboreruranuzubaduma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83971047952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1533/1227/files/basel_ii_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1275/7400/files/38208029096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5802/6904/files/62031516431.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 5

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_off000047db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47DB 5380 bytes
SHA-256: f8e75cd2f006017ab4144b568d13ad56e515036c203c59689fdd325ab33a063e
font_01_sfnt_off00005a5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A5B 9896 bytes
SHA-256: d8c7128bcad347577b2f5562cfe9d201b5142a449706a7a51d27a7da0a44e7f3

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