Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7c9fb020a6a485c…

MALICIOUS

PDF

39.6 KB Created: 2020-07-30 20:22:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 309784bd73d71642be15de7134b5867a SHA-1: c928242f28882130e89cc5c17ae34c20febddec5 SHA-256: a7c9fb020a6a485c21498d27aa839fe3fed7c2cc880610e1f5da34941e629148
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified links to known malicious redirector infrastructure, specifically `https://ttraff.com/pify?keyword=cahier+de+vacances+ms+pdf`. Another critical heuristic indicated a PDF link farm, with the first URL being `https://cdn.shopify.com/s/files/1/0433/6956/2266/files/bevogofunotazewow.pdf`. These findings suggest the primary attack pattern is to lure users into clicking malicious links, likely for phishing or malware delivery.

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.com/pify?keyword=cahier+de+vacances+ms+pdf In PDF document text
    • http://files.northandoverwrestling.com/uploads/1/3/2/6/132681836/7597639.pdfIn PDF document text
    • http://files.dxmini.com/uploads/1/3/0/7/130775866/82bfe35d.pdfIn PDF document text
    • http://files.allianceheh.org/uploads/1/3/2/6/132695546/jafetekevumi.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/1/0433/6956/2266/files/bevogofunotazewow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0698/3335/files/9474682690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/59641911937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7274/1791/files/dibafuxuzunebulefodis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/nutid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9774/2750/files/sejegixeresedewuxosukolid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7745/9365/files/1015985251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4392/8726/files/79799245537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2789/8268/files/49520909967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5165/5076/files/gijugajifeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1620/8036/files/33615069443.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 2

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_off00005d79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D79 5044 bytes
SHA-256: 29b2ab1c1d27f675a4ae5970cfff10bd294ac4f6c068d73035e6eac290d90510
font_01_sfnt_off00006e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E72 10520 bytes
SHA-256: 1f4cc51c497adeb42ec842798b0b6fcd6560b20d00264dba4b0bfdf4b018882c

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