Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6a197944c3bcca0…

MALICIOUS

PDF

35.8 KB Created: 2020-08-12 23:39:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: be7bda4fa15549152cb78ccc0e0f3118 SHA-1: c68d4ca5fefbeafa00db68210a2df0f14b98550a SHA-256: d6a197944c3bcca001bd365f4a97bbac3bb7471578768b10ccd5344c62c204ec
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary malicious link identified is https://ttraff.ru/pify?keyword=alkane+nomenclature+practice+pdf, which is flagged as a malicious redirector. The document's structure and the presence of numerous links suggest a social engineering attempt to direct users to potentially harmful content.

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=alkane+nomenclature+practice+pdf In PDF document text
    • http://files.janice-t.com/uploads/1/3/0/7/130776781/jemowo.pdfIn PDF document text
    • http://bepaxunow.littlehorsevintage.com/uploads/1/3/0/7/130738902/vurup.pdfIn PDF document text
    • http://files.wongpakhangs.com/uploads/1/3/2/7/132740637/jomoxakapukik.pdfIn PDF document text
    • http://files.newzion-clearwater.org/uploads/1/3/0/7/130776368/kofovawa.pdfIn PDF document text
    • http://files.insideoutraining.co/uploads/1/3/1/6/131606605/4424275.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/1/0428/5526/8518/files/16258392112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4647/6708/files/veranepasavewivosobasodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9070/5574/files/gafopiguwobebuxuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8491/3565/files/rejudomasisaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4418/3970/files/30405068235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/86973876115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4000/4501/files/bigepolojipid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4683/8173/files/cambridge_academic_english_b1_teacher_s_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2076/2783/files/51112943976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/81163148055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8371/0117/files/ludigeso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6905/3854/files/22358118613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3672/8734/files/acls_study_guide_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8897/7815/files/vijamapokimowoxo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EC3 5176 bytes
SHA-256: 5cd1f1b5f511b4850aedf3c9065ad5323b53420edef1b05b53b4f8f69752afd2
font_01_sfnt_off00006043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6043 9976 bytes
SHA-256: 02a9915dc3b3a3c8bd2c7b34031c1fcd6e4fb171c7ff2f08d29798586d8a240c