Malicious PDF — malware analysis report

Static analysis result for SHA-256 e675dcc9f41a0b94…

MALICIOUS

PDF

39.5 KB Created: 2020-08-14 22:15:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e83a3970d27f330c802e778f0a4ae19e SHA-1: df895714851e2b82fe32a4cbd6968f8f42054cc8 SHA-256: e675dcc9f41a0b9424294171bce1a1e1cd1019889931de657f9007c30519e86e
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised as an 'expense format template'. The PDF also contains a large number of embedded links, many pointing to Shopify domains, likely for SEO manipulation to increase visibility. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a deceptive document title and a 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=expense+format+template In PDF document text
    • http://fasif.leighsbdesigns.com/uploads/1/3/2/8/132814930/7918957.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/1/0435/2868/3672/files/oec_6800_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4329/8207/files/mi424_wr_firmware.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6195/3191/files/59218401321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3005/2005/files/17126893279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5309/5844/files/97742555216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7352/8213/files/savobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1626/3592/files/88285386545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8223/4521/files/convert_any_file_to_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9635/6504/files/zuponexobelax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0985/8969/files/balanced_diet_plan_for_weight_loss.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5408/files/37930816324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5216/2462/files/putixegivuseleb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/league_city_zip_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5996/1237/files/movavarubobi.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 1

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_off00005d03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D03 5072 bytes
SHA-256: 844676aaa21d5aa5c01ffe17870fd8b22975988d0d9e1a126752ba9635bb59f0
font_01_sfnt_off00006e31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E31 10268 bytes
SHA-256: bd412f00e7c02cc4b2f67eaa0a790a209fcdafd5d649142d05db573abac55932

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