Malicious PDF — malware analysis report

Static analysis result for SHA-256 acfde14dc60ae016…

MALICIOUS

PDF

57.1 KB Created: 2020-08-21 18:29:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f22f863702a3c3da1de29dddc5a362be SHA-1: a578d229342baa117eb1309f85d8fd38f001d389 SHA-256: acfde14dc60ae0161953ae73ee54041363ff20ed7fe31359c4917c4958ecce2c
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The primary malicious URL identified is ttraff.com, which is used in conjunction with a keyword that appears to be a lure. The document body, though heavily corrupted, contains references to the same URLs found in the heuristics, reinforcing the 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=damodar+ashtakam+pdf In PDF document text
    • http://files.christinaedmondson.com/uploads/1/3/1/3/131397971/xususipabanasab.pdfIn PDF document text
    • http://sedaraso.tiaopeng.com/uploads/1/3/1/3/131398134/8f7fad1e6f55b.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/1/0431/7973/7237/files/kanezagoxumuduvafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1135/6318/files/sheet_basant_ki_kahani_picture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/9053/4561/files/42515851944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2658/7549/files/98576634573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0029/8648/files/sodivilejubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/aikido_techniques_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/64989875230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6571/2535/files/trimble_gps_controller.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E1 5312 bytes
SHA-256: 35a1f431ff42442194b27e44f1bff4509194adbec9e04921bf759e1492b4a4d0
font_01_sfnt_off000072cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CC 11532 bytes
SHA-256: de2a20cce3ab40537001883d7d3e6ddd96de6dd676c0ac3a91018defc68a1565
font_02_sfnt_off0000974e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x974E 9984 bytes
SHA-256: 0b5694cbe228fa17db8b38c0ed8e4cd03f03e17fcb8627eaf3c28bb5d13c5e57
font_03_sfnt_off0000b99f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB99F 16436 bytes
SHA-256: a8b0c25172aa9b5bc08eee067abf1650770238587142d73506cc124324baa444
font_04_sfnt_off0000cf95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF95 1736 bytes
SHA-256: 1648accd5638f26481c437d0e436fdfb03edab78dab75f4e73239278c8cddc19

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