Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cdf26f2d4d59271…

MALICIOUS

PDF

43.6 KB Created: 2020-08-07 18:32:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 57801febaf5c223165284678b07da3fc SHA-1: 8c051dc60261737bcd430f3acd3efd53fe6886ad SHA-256: 2cdf26f2d4d5927114c888280faf433305826c29278a1b8919de1d4044ee80c6
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, traff.cc, which is likely used to obscure the final malicious destination. The document body itself is largely unreadable, but the presence of numerous links suggests a strategy of SEO poisoning or phishing, aiming to lure users to malicious sites.

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=tecnologias+emergentes+pdf+en+alimentos In PDF document text
    • http://files.doorsbypacay.com/uploads/1/3/2/7/132741486/sipemuriririw.pdfIn PDF document text
    • http://files.quixotecommunities.org/uploads/1/3/0/8/130874233/dosexisalimag-zuvowizadesupa.pdfIn PDF document text
    • http://files.chynajones.com/uploads/1/3/1/0/131070872/9046089.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/1/0432/7201/1931/files/jonobexaxawafazejiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0261/0335/files/lufijenawababakobarawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2425/9992/files/90405476771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/30246631799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/rafodufopijuxusuvekazej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6230/5702/files/daginijujatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2103/2859/files/latased.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1310/2998/files/92241539481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27392185694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4642/8072/files/applied_strength_of_materials_5th_edition.pdfIn PDF document text
    • https://doi.org/10.3989/arbor.2001.i661.827In 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 4

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_off000068cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68CD 5424 bytes
SHA-256: 0cdace9bff21289ab159869956be8c4ddc25d0a834b0bea20dccfff72934a5f3
font_01_sfnt_off00007b2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2A 11884 bytes
SHA-256: 4d8669689730bf0f7b538102100e86c60bf34b34b23469972c4cbd725a074da5

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