Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf1a29939768ebe8…

MALICIOUS

PDF

63.5 KB Created: 2020-08-25 02:32:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 29c51b9b388b1d669c707138d49c16ed SHA-1: dac87d5af6431e398988137eec87dcbe2546222a SHA-256: cf1a29939768ebe8854a38d4846324e03504f1e21b1f42b6d30059a0abea16c1
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a common tactic for SEO poisoning or link farming. One of these links, 'https://ttraff.com/pify?keyword=kf2+parry+guide', is identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text but includes the redirector URL, suggesting an attempt to direct users to potentially harmful content.

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=kf2+parry+guide In PDF document text
    • http://files.clintonrotaryct.com/uploads/1/3/1/0/131071067/584023ffbfa.pdfIn PDF document text
    • http://files.nathanjoyal.com/uploads/1/3/0/8/130873826/4239751.pdfIn PDF document text
    • http://kirok.emmaredmarchrose.com/uploads/1/3/1/1/131164250/fdffcdf714.pdfIn PDF document text
    • http://desupigu.retroca.com/uploads/1/3/0/7/130739892/7854976.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/1/0433/0687/7080/files/zofoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5163/9196/files/71353346804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5915/8940/files/body_beast_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0958/0961/files/calendario_annuale_2020_da_stampare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9183/5545/files/78622166023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/aafp_feline_vaccine_guidelines_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/kazedelotupumizixomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0876/0742/files/69701145060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0488/6166/files/xekig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2069/8268/files/mudufapalutuxigovozobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/68540756211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/64731852580.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_off0000bbd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBD9 5204 bytes
SHA-256: 41669f7a91088ae315595989e82aeea2a4d93034d5c59f019ffa7052f5d7402a
font_01_sfnt_off0000cda7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDA7 10536 bytes
SHA-256: 0c6b4df3004a0cf426be4c093e7edd121a5f60003f059d1c33faa604366b8629

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