Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5e56105c6381d40…

MALICIOUS

PDF

42.5 KB Created: 2020-08-06 00:23:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1fdf854855c4630e8f789f80a0f32d2d SHA-1: 3c48e00237f0acb2b6dd743aada8936388a6044e SHA-256: f5e56105c6381d40342ae3f6c77c372fa9873eec9716c14461a44663ffc152ec
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL and other Shopify URLs, suggesting a lure to download content. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be a social engineering lure to trick users into clicking the malicious link.

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=bangla+english+grammar+book+pdf+free+download In PDF document text
    • http://files.teamfloridahoops.com/uploads/1/3/2/6/132681426/sodipegogodubitiwaje.pdfIn PDF document text
    • http://files.escaperoomelectronics.com/uploads/1/3/1/6/131606807/bumexupa.pdfIn PDF document text
    • http://files.kingclassictournament.com/uploads/1/3/2/7/132710704/fazar-tirurutojobuza-jatujuzoxis-nesopi.pdfIn PDF document text
    • http://files.mohawks.net/uploads/1/3/1/8/131857304/fowimekulurodu-wafatipidamu.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/1/0431/4926/3004/files/komizifebiperi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7168/4252/files/tuxizadivowugosefapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/adobe_photoshop_trial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/command_line_arguments_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8161/9861/files/tovajopapilunaxenukeluxef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7373/1741/files/55207292852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1342/0702/files/tisotedudutipeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6899/5224/files/gofunibalapin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/93761869430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/mekugifigoferipovul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6322/9078/files/wadesatexekusawutop.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_off00006754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6754 5800 bytes
SHA-256: 43ee80da0c3bfc6b4c28c3bfad01b3a7d60c71aa9b44fe141dc33b739b108445
font_01_sfnt_off00007af4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF4 9880 bytes
SHA-256: 2bb2ed71333c05cc752bac0908dc9938ee06fec8cddb245824d89fd2afdd1b8a

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