Malicious PDF — malware analysis report

Static analysis result for SHA-256 67f608c25a3f9ee3…

MALICIOUS

PDF

53.0 KB Created: 2020-08-14 18:20:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1bdb29fc3cd630ed107b05df69009186 SHA-1: 96a5d01d6f2222a9aa456ffd8ac424a282e94c19 SHA-256: 67f608c25a3f9ee3cb88b2b79d4fa57b60e2292c7f599261b06539151182a214
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body text, though corrupted, includes the same lure text and URLs found in the heuristics, suggesting an attempt to trick users into downloading further malicious content. The ML classifier strongly indicated 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=guided+reading+chapter+book+sets In PDF document text
    • http://files.aaroncitti.com/uploads/1/3/0/9/130969476/gegatofisu.pdfIn PDF document text
    • http://files.dsempoweredlife.com/uploads/1/3/1/6/131636990/6838276.pdfIn PDF document text
    • http://tekovidi.orlandodeleon.com/uploads/1/3/1/6/131606349/52a45c99afc.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/1/0429/4855/9004/files/23535403901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/25119272419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3444/1885/files/nfl_divisions_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nuxekenosagulowagegur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1080/9256/files/noruwipudikiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/befejokiwujiseza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/kuvususijuruto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7482/2044/files/malipesuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9649/0655/files/zedubisavofinotisifoxeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4586/2041/files/inter_botany_textbook.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_off00009090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9090 5540 bytes
SHA-256: 554d04835c3dc2b3d0d1b72f11ff8a632cbbf64f36eed48d992a22b04a2b8717
font_01_sfnt_off0000a350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA350 10560 bytes
SHA-256: 13ae58b9f7cf530062b533594a3f76798123f28ce90a58701c70f1bca645dc94

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