Malicious PDF — malware analysis report

Static analysis result for SHA-256 38f19fbc596eefd1…

MALICIOUS

PDF

42.6 KB Created: 2020-08-22 11:47:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a49235d92c7eb4b9cecf2c220658a6d0 SHA-1: 55a083149bba9ab4633cc78776e173925c8de835 SHA-256: 38f19fbc596eefd10136dce08a3a76352733d00c0838bda446577165e1de8115
194 Risk Score

Malware Insights

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

The PDF was flagged for containing a large number of external links, indicative of a link farm or SEO manipulation. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=bibliography+website+apa+format', is associated with known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated.

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=bibliography+website+apa+format In PDF document text
    • http://nanusexu.davisionentertainment.com/uploads/1/3/2/6/132695578/d55051324ca41e.pdfIn PDF document text
    • http://files.cherokeenationalgolfclub.com/uploads/1/3/0/8/130815277/0135917cf15f613.pdfIn PDF document text
    • http://files.bakerymadbatter.com/uploads/1/3/1/4/131437680/ziwabem.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/1/0435/5306/3063/files/nowabanojameritafilibox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/aadhar_card_update_mobile_number_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/3180/6376/files/69341637725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/46068533603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/michigan_durable_power_of_attorney_acceptance_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6443/3566/files/9418113825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/free_worksheets_for_elementary_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6975/7850/files/emoji_answer_for_hugs_and_kisses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/ethylene_glycol_intoxication.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8560/1693/files/the_age_of_romanticism_in_english_literature.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/golafedejaxuxojibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/18631228328.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 2

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_off0000689a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x689A 5700 bytes
SHA-256: 929a7cbc3855bebb44fd91e63b4b15e5f60a3ec8be86ebd73a5795423320022a
font_01_sfnt_off00007beb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BEB 9932 bytes
SHA-256: b5580f49658e837702684ab2cc1f2f46b292713f7c562677ba0eb20493b9edfd

Open this report in the interactive analyzer, or submit your own file for analysis.