Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c78a46211fd22f1…

MALICIOUS

PDF

55.2 KB Created: 2020-08-05 05:22:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6d332f5c2d7c5dedc847a97edee351e SHA-1: a33f2fb6e96c6d622efb95613f497c67b736137c SHA-256: 6c78a46211fd22f10ab860e20946082f86bc29bb9d5283df4bb0b853c56d60bf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body and heuristics suggest a lure for free downloads, likely leading to a phishing or malware download site. The ML classifier strongly indicates maliciousness.

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=public+administration+and+management+in+south+africa+pdf In PDF document text
    • http://files.fallline.org/uploads/1/3/1/8/131871977/vawujupukobogivizoti.pdfIn PDF document text
    • http://files.copernicus-training.com/uploads/1/3/1/8/131871745/4288664.pdfIn PDF document text
    • http://files.nducuwangugi.com/uploads/1/3/0/9/130969555/gimuviri-megatanizus-selusifo.pdfIn PDF document text
    • http://files.thetruthhemp.com/uploads/1/3/0/8/130813458/d3834f5.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/1/0437/6395/7918/files/13220839477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3495/9256/files/xopekuteposulika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9213/2511/files/xadixogavixevodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wopeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/fiwoparoduguferidubejelod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2086/0064/files/fudosaguxakifeputinapon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rerotapok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/rubewijogesamonavurires.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2776/7206/files/20584009699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13002849425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2642/3701/files/kifepetalawosapolem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1264/3223/files/cub_cadet_ltx_1045_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6224/7067/files/63709013301.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_off0000989e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x989E 5712 bytes
SHA-256: 060f28f5b3a501c618c5df7d80499425b1eb4e22f7f6621a9fccabcf9d6a0ee4
font_01_sfnt_off0000abdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABDB 10540 bytes
SHA-256: 4749e1f2fd7c50d5adffa050e6b48c9afd12e35b0f0addc4173f25bcbcef61b1

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