Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8a5c8ada89b2418…

MALICIOUS

PDF

43.8 KB Created: 2020-07-29 14:07:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 71189109ca0888963ba4391be27c33e9 SHA-1: d815396c51a19c78e6ebd4dc6af2151ac271b112 SHA-256: d8a5c8ada89b24181c282e60e5de7abe8c3db407b01d16f8fbfe6eab1bc8d05e
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external websites. One critical heuristic identified a link to a known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=asciidoc+pdf+themes'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. The presence of a link farm further supports this, indicating an attempt to manipulate search engine results or distribute links across various platforms. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=asciidoc+pdf+themes In PDF document text
    • http://files.teamvelocityvbc.com/uploads/1/3/1/3/131383255/4295366.pdfIn PDF document text
    • http://files.chimachancreations.com/uploads/1/3/1/8/131871569/lonaxixedokoxam_dadopituzaguli.pdfIn PDF document text
    • http://files.periodisasi.com/uploads/1/3/1/1/131164462/lajiworusalima.pdfIn PDF document text
    • http://files.uprisingstarsinc.org/uploads/1/3/1/3/131379045/gowofikur.pdfIn PDF document text
    • http://files.hendrygeosciences.com/uploads/1/3/2/7/132712234/jiboketatik.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/1/0428/9835/8432/files/4077026649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6249/2313/files/nebudimomuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4111/1712/files/zewavujivumaziga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7045/5957/files/71657516130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3154/3463/files/wuzekininafobikusurebat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8460/1758/files/nanolodakemakawoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1960/7965/files/ximigor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8158/0200/files/67674234106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/xadoravosin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/gudanidaxisamu.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 8

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_off00006a06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A06 4728 bytes
SHA-256: dfda7ed2b5cf5d223d0734437abb687f305b6399b3c1dc7f41e8e03bef623aff
font_01_sfnt_off00007a1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1E 12688 bytes
SHA-256: 747fdd6fcc250e59e4dea266ab4110f7f159006fd3127881fb802dd917f2f464

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