Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff420f054b92f762…

MALICIOUS

PDF

39.4 KB Created: 2020-08-22 13:26:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac38ec3e1eea7cae1ef07b3722814bcf SHA-1: a28f772cf5cfefec17c92d2f992e08496a4f53d9 SHA-256: ff420f054b92f762223626259a45bb296a2bebe61e78967003bbd4e950e24c4d
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with heuristics indicating a 'PDF SEO Link Farm' and a 'PDF Malicious Redirector Link'. One of the identified malicious links is https://ttraff.cc/pify?keyword=c+a+s+a+full+form, which is likely used to redirect the user to a malicious site. The presence of numerous external PDF links, including one hosted on Shopify, suggests an attempt to manipulate search engine results or distribute content through a seemingly legitimate platform.

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=c+a+s+a+full+form In PDF document text
    • http://files.serenielle.com/uploads/1/3/1/8/131856626/xizuludereniv.pdfIn PDF document text
    • http://files.w4caprinepursuitmininubians.com/uploads/1/3/0/8/130815437/191ddb.pdfIn PDF document text
    • http://jisoremu.smithpoolservice.com/uploads/1/3/1/6/131636725/355725b2fb2b672.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/1/0431/4287/3249/files/rampolla_pocket_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/zusafuxexogalinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5667/6510/files/xisarul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8298/0259/files/16221533130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/catalogo_de_tornillos_y_tuercas_colombia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/bizaxetugufupuzizow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3882/5887/files/98752001477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7777/7061/files/zoparuxotatapefubiwovex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2537/5127/files/definition_of_anaemia_in_pregnancy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/vamanokotifogijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4410/8453/files/the_strain_gauge_primer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6809/6661/files/kirigituxeba.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_off00005db7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB7 4816 bytes
SHA-256: 5af8f6c3db608edc47df87af83d794b936dc61a2ba04e195bf43e1e028453aac
font_01_sfnt_off00006df5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF5 10244 bytes
SHA-256: ae488f7a9849938d66b977cd81e461d2c6a0decefbb6d0e86993529bf4590601

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