Malicious PDF — malware analysis report

Static analysis result for SHA-256 a618f202fd549463…

MALICIOUS

PDF

49.8 KB Created: 2020-08-20 13:01:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fcb302bd4403255c6f2976716925df84 SHA-1: 015af3aabc7cebb99887a91556b6b3207dc1d658 SHA-256: a618f202fd54946342bb98532ff0554857e6e69515b1ef7f07933de551a03215
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and keywords related to templates, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify, likely to obscure the malicious redirector. The ML classifier strongly indicates 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=particles+template+after+effects+free In PDF document text
    • http://files.nigellasativacenter.com/uploads/1/3/1/1/131163691/d2f24c8d0cf.pdfIn PDF document text
    • http://files.awetosee.com/uploads/1/3/0/7/130776573/6cc61.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/1/0431/1485/6610/files/6825553576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9898/6909/files/39207248547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0805/5720/files/survey._foreseeresults._com_sprouts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7418/1537/files/kezadujujonewobotelujuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1013/files/4277215023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9897/1038/files/vugivivokow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8872/3616/files/contemporary_sociological_theory_craig_calhoun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8543/7853/files/customer_satisfaction_survey_report_kenya.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6232/0536/files/niwoxumejomirigalulubap.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 4

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_off000085c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C5 5164 bytes
SHA-256: 975e4ccee0cf98b093eba305bfcbf3086dc25b6eeb4aaa9716f6994a20d72ed2
font_01_sfnt_off0000973b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x973B 10244 bytes
SHA-256: 4111063ca6672c931f3a5e962db1b594b5bb2815482156c9eb635b8407bb547d

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