Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d10323fba66e740…

MALICIOUS

PDF

72.8 KB Created: 2020-08-01 12:57:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c98dde972a8452e031cb523ea31ba7dc SHA-1: 65630a3ad6d6c06f9148e19215cb2e3a2b2bf674 SHA-256: 3d10323fba66e740b469c5675ed906b1c74e27191552f538aa7ca9dfebddc22e
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically ttraf.ru. The document body, though heavily obfuscated, contains a URL that appears to be a lure for downloading a book. The presence of numerous external PDF links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning tactic to attract victims. The ML classifier strongly indicated maliciousness.

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=fundamentals+of+cost+accounting+4th+edition+pdf In PDF document text
    • http://files.momwhogivesaflax.com/uploads/1/3/2/8/132815791/9144541.pdfIn PDF document text
    • http://files.youngravensliteraryreview.org/uploads/1/3/1/4/131407214/zesaboxovenin.pdfIn PDF document text
    • http://files.joescottdesigns.com/uploads/1/3/1/0/131069789/revowe_nozimune_newojinawaxupi.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/1/0429/3178/1791/files/vuguvijetub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9670/2104/files/garufofogizax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6587/6390/files/16943921221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42539854631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/vopifej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9307/1774/files/mekugepolosotomor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7090/5756/files/wow_classic_forged_steel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9432/7961/files/sizigitupukapepavugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7256/8996/files/kafapajenoxubanekegam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/sikaniju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1214/5823/files/44889788421.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_off0000dddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDB 5516 bytes
SHA-256: f3ae0f6135b21c78b46566c584389e2edf7ba426682b473764c2f4402a67823f
font_01_sfnt_off0000f088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF088 11072 bytes
SHA-256: 77e36651b3598b95168bb1a78e533dd323a7c020ae2efd16f8ff3652e8e48817

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