Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb55a5f34288fc3d…

MALICIOUS

PDF

58.1 KB Created: 2020-08-11 13:20:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: acce68c0336929f6a78deda2433588a5 SHA-1: 146b81f71908a75e9fb634ceb7d5ab705a97c345 SHA-256: fb55a5f34288fc3dc3c35417ba8699902821921a29c1f9cf6004b6d792109960
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains this URL and other links, suggesting a phishing or redirection attempt. The presence of multiple embedded links, many pointing to Shopify domains, indicates a link farm strategy to obscure the ultimate destination. The ML classifier also strongly flagged this PDF as malicious.

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=causes+of+deterioration+of+concrete+structures+pdf In PDF document text
    • http://medazuboj.westside-church.com/uploads/1/3/0/8/130814328/5128926.pdfIn PDF document text
    • http://files.realbostonian.com/uploads/1/3/1/4/131406885/4123006.pdfIn PDF document text
    • http://files.slang4201.com/uploads/1/3/0/7/130739916/96ebe.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/1/0432/3622/9278/files/tisimapufolekolavemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4115/1386/files/kiloriwep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/15065458136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3136/1686/files/analise_sintatica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/treatment_of_abnormal_behavior.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0635/9714/files/63552531150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0897/4235/files/66522886071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/6581/3666/files/oxidation_and_reduction_reactions_organic_chemistry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/square_root_of_13.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0335/5034/files/tufas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/mopiwolipelesafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/bruno_munari.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_off0000a78b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA78B 5024 bytes
SHA-256: 687563d3c7237f8646a35cace5b51599f3460ddfdd23c1cd6a93a40faf94366e
font_01_sfnt_off0000b8ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8AD 10116 bytes
SHA-256: 3c1e22ad3222d5f00d3b81cc9bea9ee4d4eda6cb4443367d25526b3d1b78eaf3

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