Malicious PDF — malware analysis report

Static analysis result for SHA-256 38e5ecee42b4a2a3…

MALICIOUS

PDF

40.3 KB Created: 2020-08-01 08:41:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eea480bf50acbe81f5b1fdb7304593ce SHA-1: 19742f43226841213fec3b26bf5ebaa5cecbfd46 SHA-256: 38e5ecee42b4a2a361d00c873109db03e10e627aa1e92f6fe10a329d6d2631c3
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) or are part of a link farm designed to manipulate search engine results. The document body, though partially obfuscated, contains text related to 'convert from degrees to radians' and the malicious URL, suggesting a lure to trick users into visiting potentially harmful sites. 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=convert+from+degrees+to+radians In PDF document text
    • http://files.jumpseatstories.com/uploads/1/3/1/6/131607053/zudorapoke_ranukodamu_maluji_galipagugil.pdfIn PDF document text
    • http://files.jjeffreymesserole.com/uploads/1/3/1/3/131384018/f3faf9c41e.pdfIn PDF document text
    • http://files.speakadelic.com/uploads/1/3/0/7/130775304/venusun.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/1/0435/4641/1160/files/38064612672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6843/2288/files/16840063768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3174/9031/files/84831813477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2025/4375/files/nejokarofifojoxajem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5168/7848/files/75949561576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/xukunipogarizutekuvujepad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5109/0071/files/jopuweka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/34844991019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/42803778963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4042/3587/files/6614684716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3991/5164/files/68165319990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2621/8136/files/37188977097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7018/3831/files/vukidutadazanelosez.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 8

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_off00005ca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA7 5160 bytes
SHA-256: 7aead736222125295c33001c464bfb6124d0c8a5d38fb7bf2effe8c2a7c08ada
font_01_sfnt_off00006e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E25 11068 bytes
SHA-256: 3fc5f0e41616977b596118f72b09802ebb9f8a9bd648d45e6c396650016f48df

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