Malicious PDF — malware analysis report

Static analysis result for SHA-256 57c139f9c2e1068c…

MALICIOUS

PDF

47.1 KB Created: 2020-08-24 16:47:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 46d01266000153620954071b5fd3bbe6 SHA-1: 192daf3f21339d1876264cc02f722204ef906a43 SHA-256: 57c139f9c2e1068cd7acf174d68a0ff3537315fffdc6b52f2c917a22cc70859c
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=joint+venture+agreement+template'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into clicking it. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is the most critical IOC.

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=joint+venture+agreement+template In PDF document text
    • http://guxel.junctionhillpentecostalchurch.com/uploads/1/3/0/8/130814328/boxotaritepaw.pdfIn PDF document text
    • http://files.chardonhs.org/uploads/1/3/1/3/131380786/femipa.pdfIn PDF document text
    • http://vatosa.citywestetns.ie/uploads/1/3/1/0/131071164/kemumu.pdfIn PDF document text
    • http://nolila.vickijansma.com/uploads/1/3/1/1/131164250/1322508.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/1/0427/8360/4903/files/66367128376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/tedinamonepetolatupipozas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8151/2613/files/29159802601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1060/4705/files/rossetta_stone_swahili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5868/3291/files/antidepressants_and_weight_gain.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7189/6736/files/alimentos_ricos_em_vitamina_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/baldur_s_gate_ii_enhanced_edition_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/arbor_acres_plus_broiler_performance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3320/6689/files/62877452596.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_off00007cca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCA 5008 bytes
SHA-256: d65260317bc47ed482d1ec4a3f6ce4ff54150a7dcbf2eeb41a344fd6b0cca4b3
font_01_sfnt_off00008dc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC7 9880 bytes
SHA-256: d6b71235f9f9fa262cf4438d4e53d9c57a0b6b96cd6fc710b653c6af34637153

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