Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cb6e8064d638128…

MALICIOUS

PDF

47.8 KB Created: 2020-08-18 17:03:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e8d4da50a17336097632d71b59b17933 SHA-1: 7d7e72d9d871f964b878b0eb20c04f7546372f8a SHA-256: 0cb6e8064d6381281903d8a23e1e179bbc39c0c48f10b538995d76eb03f86f08
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a redirector hosted on 'ttraff.ru', which is flagged as malicious. This redirector is likely part of a phishing or scam campaign, attempting to lure users to download further malicious content or visit malicious sites. The presence of numerous links, many pointing to Shopify domains, suggests an attempt to create a link farm for SEO manipulation, likely to obscure the true malicious destination.

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=blokkeren+telefoonnummer+android In PDF document text
    • http://files.rubinjen.com/uploads/1/3/2/3/132302921/7095533.pdfIn PDF document text
    • http://rudet.weitzelfinancial.com/uploads/1/3/1/3/131382406/muviputirulizi.pdfIn PDF document text
    • http://fujok.annawitte.org/uploads/1/3/0/9/130969057/cd3126597.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/xizeliwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/1517/2259/files/administrao_de_varejo_para_pequenas_e_mdias_empresas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0744/2072/files/math_worksheets_for_preschoolers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/10794097900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3235/4727/files/bram_stoker_s_dracula_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4642/0136/files/malos_habitos_alimenticios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9237/6741/files/fjalor_ekonomik_anglisht_shqip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1323/2024/files/navofijikofomekoxesoloj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/pemolamowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0879/4525/files/zorejew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/bonoxubijitun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6055/7984/files/69090481249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9508/1625/files/dinuvokijemujuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4865/7311/files/8498229961.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F86 4872 bytes
SHA-256: 091d3781a337de48363d409d4ef79e30645c9c9654fb9b6b3588241e2ee4d404
font_01_sfnt_off00007ff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF3 10736 bytes
SHA-256: 47fd8311f53a639004cb29f084976113c19391b8dbe8a0a3d11560768a2512a0
font_02_sfnt_off0000a426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA426 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3