Malicious PDF — malware analysis report

Static analysis result for SHA-256 8da062550093e29a…

MALICIOUS

PDF

42.7 KB Created: 2020-08-18 16:13:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6838fa2df05503667d70cfd561bee48 SHA-1: d958e65657b3149e55e483cb6803c4bfffb09184 SHA-256: 8da062550093e29afbd0d2bc6551faa2fe665a1dd50c4ed6a9cd191446bf65ae
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to external resources, including a known malicious redirector. The document body, though partially corrupted, contains the URL 'https://ttraff.ru/pify?keyword=complex+sentence+pdf+worksheet' which is flagged as a malicious redirector. This suggests the document is designed to lead users to malicious sites, likely for phishing or malware delivery. The ML classifier also 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.ru/pify?keyword=complex+sentence+pdf+worksheet In PDF document text
    • http://soburaja.jodynixmusic.com/uploads/1/3/0/8/130814995/8857830.pdfIn PDF document text
    • http://files.animaliadiertraining.net/uploads/1/3/1/1/131164476/8666987.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/1/0440/9350/5688/files/lelevozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0041/9736/files/83475424921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/duzixebepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6638/2749/files/national_building_information_modeling_standard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1355/1781/files/sextus_empiricus_adversus_mathematicos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3459/7784/files/file_jadi_satu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41841620016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9745/6801/files/61539729137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6545/0391/files/73825264850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4346/3074/files/tuxuduxuzelajuzisoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1960/6936/files/amanaka_sita_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4018/6279/files/3074147065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5327/5546/files/11766369245.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 6

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_off00006947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6947 5312 bytes
SHA-256: ac75d730057393b06a131c3f12f86be714447a361f544255be98e70e6452d45f
font_01_sfnt_off00007b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4E 10176 bytes
SHA-256: 0574caa753cb06d08cb22dcd3a4668bb24e897f12090776844633b15549128c2

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