Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4fc0ff64dad28d2…

MALICIOUS

PDF

50.8 KB Created: 2020-09-02 14:26:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 24a9d5357e89371ee6895b1a7f1a77d5 SHA-1: d9d55fbcd5edaf43ea20fef81bffd51bc9531ee2 SHA-256: b4fc0ff64dad28d27fac7cf74582d85b5e92cb2b3aa14bf602ccd6ffda453cab
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.me'. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a link farm or lure. The primary malicious link is likely intended to redirect users to a phishing or malware distribution site.

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.me/wix?keyword=best+free+indesign+brochure+templates In 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/1/0432/1263/6322/files/15252617942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/lm368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0064/2211/files/72426100715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3494/3389/files/personal_financial_statement_template_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/wokuzipaxivaxazakowitofas.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2c8d66_506913a75e4c491c9bb2ade9bd5dded5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0047a4_ae8e01ad22684101ac49fa2eec7d4c30.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/16a96a_72f3c637f6c14d78b052840247021390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5052/3029/files/98448783491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9520/3745/files/gugutapisekanagufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/55405096405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3167/3504/files/98140556178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2836/3939/files/bangla_new_natok_2019_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7952/2722/files/straddling_the_line_jaci_burton.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 2

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_off0000865e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x865E 5760 bytes
SHA-256: 822c9fada59b02f95c6258609d5bc2eb204e7159b558fc62fe32a93e90bdd1dc
font_01_sfnt_off000099d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99D3 10544 bytes
SHA-256: d9fa9babf415a1454e478f457d75f42a9a7a810634cb95f33428e2ec1cb90d73

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