Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bbd428acb8d63ba…

MALICIOUS

PDF

40.9 KB Created: 2020-08-04 16:46:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ed27f33dc4d77c65388d8342f9bdf597 SHA-1: 5fe167c594004827a46aa8ed65f9892eca2ebcbb SHA-256: 0bbd428acb8d63ba95917efceb52626d819140c07a2a9bdd594d88d2069dc0c6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external resources, many of which point to a redirector service (ttraff.cc). This suggests a phishing or malware distribution attempt, masquerading as a free download. The ML classifier strongly indicates maliciousness, and the presence of a malicious redirector URL is a high-priority indicator.

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.cc/pify?keyword=learn+swiss+german+pdf In PDF document text
    • http://files.navinpokala.org/uploads/1/3/0/8/130813696/8137505.pdfIn PDF document text
    • http://files.funtravelescapes.com/uploads/1/3/0/8/130813588/90e63d58bd700.pdfIn PDF document text
    • http://files.sustaininggrace.com/uploads/1/3/2/6/132680874/3757009.pdfIn PDF document text
    • http://files.westtrailmassage.com/uploads/1/3/1/3/131398406/8723529.pdfIn PDF document text
    • http://files.lgpristineclean.com/uploads/1/3/1/4/131452836/1101966.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/1/0433/6202/5624/files/82194372591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/vhdl_clock_divider.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8370/1151/files/64307243323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3234/6773/files/bofikunekotelejaxutol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6142/5814/files/p90x3_workout_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/pazutebaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/estgios_da_doena_de_alzheimer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2433/4498/files/bavalevut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/32020610097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7227/5103/files/vigipuben.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 6

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_off0000611b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611B 5360 bytes
SHA-256: 2162bdc4e1c328ff756c66508b2474cadef3a0749bf272e144beb091b5205876
font_01_sfnt_off0000735b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x735B 10648 bytes
SHA-256: 8e5207493dc10e0fbe123d35edb4003701d5a8ae2ffd591c8c684461a20158fb

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