Malicious PDF — malware analysis report

Static analysis result for SHA-256 fff61982e3187095…

MALICIOUS

PDF

40.6 KB Created: 2020-08-21 13:21:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e298965a1bd7a1d1c046140d5cf3d32d SHA-1: e750c319f8b10ee1fcccfb264de583411c941fbb SHA-256: fff61982e31870950ff915a753c10743ee27996d3a7495a0f8d3cbb6c3e50e30
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, characteristic of a link farm. One of these links, 'https://ttraff.ru/pify?keyword=customer+centricity+peter+fader+pdf', points to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The document body itself is largely unreadable but contains the suspicious URL.

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.ru/pify?keyword=customer+centricity+peter+fader+pdf In PDF document text
    • http://mivedotu.scenesofvirtue.com/uploads/1/3/2/8/132815806/3824681.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/1/0447/9506/8565/files/a_christmas_alleluia_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/8296/1311/files/north_penn_reporter_lansdale_pa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5011/4965/files/45474406482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/telokawukikotenubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4715/7914/files/edit_file_ke_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4508/4574/files/fuvamegirevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5056/3734/files/91982323642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7196/2269/files/avalon_hill_d_day_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1738/6659/files/nejerotaxuruved.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5625/9491/files/astragalo_anatomia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5057/2695/files/veligoporuzimojivamexi.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 7

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_off0000621b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621B 5276 bytes
SHA-256: b6096c7554914fcfb1f08d9f4e2eeb43a255ea7d5f658e764ba73d9651694361
font_01_sfnt_off000073ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73FF 9824 bytes
SHA-256: f94c1bad03bd641265ced999f5f62c4ec65f6d753c138174cb22d73a36c130c7

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