Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f33c485c5939c24…

MALICIOUS

PDF

33.8 KB Created: 2020-08-22 19:40:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1e7e1a229db53e8020a25163f03877f SHA-1: 20593d482b86a81f272004d5bcb1db2adbcf10a2 SHA-256: 8f33c485c5939c2477dad834cad980f59440b58578d3c3805a03384b9897052e
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains a URL that appears to be a search result for a microscope, likely a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded links to Shopify domains, some of which are confirmed benign, but others are unknown or potentially malicious. The primary malicious IOC is the ttraff.com redirector, which is designed to funnel users to further malicious content.

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.com/pify?keyword=bresser+junior+dm400+digital+microscope+software In PDF document text
    • http://fajowexal.fairoaksproducts.com/uploads/1/3/0/8/130813765/6a0224993a65534.pdfIn PDF document text
    • http://files.recoveryhumanface.org/uploads/1/3/0/9/130969352/08009cbb4.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/1/0431/3314/1149/files/jufafesuresukagutawoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0864/7580/files/37803291502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1087/2728/files/16983178097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7333/9559/files/88850694827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8530/7810/files/73753885967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1995/0485/files/wujuvidodoruwupuwofaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5672/6170/files/83396221651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9471/9131/files/75616156141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5158/1597/files/xexezibafewipisufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/vumusuzenefit.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 5

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_off000044e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44E6 5924 bytes
SHA-256: 1917bc8d626ed8c0732b00bf5f0e55f692268323b50a5b33a23803ae7bd83dd8
font_01_sfnt_off00005919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5919 9756 bytes
SHA-256: 19277f229924a21d567869dbb1a9f04bab160588a04d372fc82db401f3ab06bc

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