Malicious PDF — malware analysis report

Static analysis result for SHA-256 c82cd77de7f6a4e5…

MALICIOUS

PDF

35.6 KB Created: 2020-08-06 19:03:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d93e54db5ceb217b17d6b461d1e94e9 SHA-1: 7ea2654ff904392fd658c28d8c8b4fefdd3d1bfb SHA-256: c82cd77de7f6a4e52266c190d71f3f45f38a0a5dfea1d0474aa62fba5f20afe4
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=foxit+pdf+reader+for+android+free+download'. This URL is presented in a way that suggests a software download lure. The document body also contains this URL, reinforcing the social engineering aspect. The presence of a link farm heuristic further indicates a malicious intent to distribute content or redirect users to potentially harmful sites.

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=foxit+pdf+reader+for+android+free+download In PDF document text
    • http://zizinero.expo4seniors.com/uploads/1/3/1/0/131070450/kifudutojasa.pdfIn PDF document text
    • http://files.thenamasteyogastudio.com/uploads/1/3/1/1/131163960/596379.pdfIn PDF document text
    • http://files.blainerobbins.com/uploads/1/3/0/9/130970001/6bf740eeb.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/1/0428/9835/8432/files/72518400380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0645/0074/files/5037735640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/92222698339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3671/0824/files/dilabifabumuretobam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/durga_saptashati_gujarati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9573/5976/files/14534993015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7909/0854/files/83501068825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1867/3566/files/81831619711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5888/6806/files/47842335019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6576/9110/files/13374855627.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 4

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_off00004f24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F24 4972 bytes
SHA-256: c61c33b319544904e5f08015bd100c39d60367b08b6b65467b183f0391f138e5
font_01_sfnt_off0000603a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x603A 9816 bytes
SHA-256: be7d819ad0ffd139c7a68cca38b08d8ed3a4d1f31d2fe77e98840185259b15c6

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