Malicious PDF — malware analysis report

Static analysis result for SHA-256 84a427fe5d02fa8d…

MALICIOUS

PDF

39.5 KB Created: 2020-08-13 22:41:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5af67b3ef2aec71c4a58c3f0a34fa23e SHA-1: 80d8e4518d669b91447c40e5617097890b504e5b SHA-256: 84a427fe5d02fa8d4c5f00a0461c669d5be056d41936f8369890347480abae5f
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The presence of a large number of SEO-optimized PDF links suggests an attempt to lure users through search engines. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

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=d%2526+d+5e+dex+barbarian+guide In PDF document text
    • http://zikoxaj.atlantawaterjocks.com/uploads/1/3/1/6/131637135/ponobizedimolido.pdfIn PDF document text
    • http://files.learnsplunk.com/uploads/1/3/1/4/131438604/lusetexupa_vasex_jorimeli_punawalujuzokuv.pdfIn PDF document text
    • http://files.strategicmeetingtech.com/uploads/1/3/1/1/131164556/notexif_vetuxifaj_janidanapedamej.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/30617095305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4347/1003/files/88412621267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2166/3397/files/fetasigiduz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2195/9325/files/21312582955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1707/4850/files/gokekenakasad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3525/4171/files/dusopurifupafusulodazoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0316/6369/files/69966693235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/89072917916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7673/8462/files/13987035884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/78912155063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/8181916803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9582/6336/files/dibijubapukevufebadoger.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 3

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_off00005ff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF1 4156 bytes
SHA-256: 491d847b6606b2aeef656f0a947dbdea29e01eb243e8a29fdb65c017b6eb5ea4
font_01_sfnt_off00006e1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1F 10784 bytes
SHA-256: 9c2ce4c9034396f7c10edca4444794db691539528015fe2e9c5c673e40e5d201

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