Malicious PDF — malware analysis report

Static analysis result for SHA-256 3808454ed0277951…

MALICIOUS

PDF

41.5 KB Created: 2020-08-21 09:12:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6290a958fc0aa472ea69404f02726ec1 SHA-1: f23a43697195b26d957c483479035a26d6d15d16 SHA-256: 3808454ed02779518a35d39e5f104306892ee3d1f5bc0106a97c745faa3e03bc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm with 16 external PDF links, one of which redirects to malicious infrastructure at ttraff.ru. The document body, though heavily obfuscated, contains the same malicious URL and benign-looking PDF titles, suggesting a lure to disguise the malicious redirector. The primary attack pattern involves social engineering users to click the malicious link, likely leading to further malware download or phishing.

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=brazil+visa+application+form+pdf In PDF document text
    • http://files.amyjlane-instructional.com/uploads/1/3/2/7/132740467/525610.pdfIn PDF document text
    • http://midudew.electhicks.com/uploads/1/3/0/7/130775734/8051504.pdfIn PDF document text
    • http://files.globalexplorertravel.com/uploads/1/3/2/3/132303151/noragejafe.pdfIn PDF document text
    • http://wuwego.normanmuseum.org/uploads/1/3/1/3/131380828/4d573fef8.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/1/0439/2452/1128/files/95480543798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1133/2503/files/discuss_the_ontological_argument_for_the_existence_of_god.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2402/1664/files/52032922993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8306/3715/files/playground_sessions_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5915/7921/files/subefejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/54218273667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/719714918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8462/7624/files/momotajuganoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/47156338755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1806/6842/files/busofego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/tukagazatorawusawujeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1674/7170/files/pdf_writer_for_mac_free.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_off0000640c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640C 5460 bytes
SHA-256: 981d8133cc5c1c7e46893a2d2f27346bcdec37e455473a2044437946532433e0
font_01_sfnt_off0000768b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x768B 10180 bytes
SHA-256: 0a04bdfb3dc1c2553983385a9e501a6e7e6fbb26874490e0790bf9520bdb0eac

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