Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd4c24b097a7047b…

MALICIOUS

PDF

44.4 KB Created: 2020-08-02 11:56:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03d24339bf17e51f98eec0de0b4cf6dc SHA-1: 62a7162482eadf8b35527ba69f7b81bf4ad18c6c SHA-256: bd4c24b097a7047b32b6b5951136d1d92c07d21af3df26d85e7ea720143d81d6
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=sceptre+u505cv-+umc'. This indicates the document's primary purpose is to lure the user to a malicious site. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the malicious redirector is a clear indicator of malicious intent.

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=sceptre+u505cv-+umc In PDF document text
    • http://files.fabfactoryaz.com/uploads/1/3/2/7/132740186/livanineku-nogafabore-jasudolig.pdfIn PDF document text
    • http://files.richardsnyder.net/uploads/1/3/1/4/131453252/natikinetama-pexawafapipi-sujalazu.pdfIn PDF document text
    • http://files.miwildlife.org/uploads/1/3/0/8/130874598/2277756.pdfIn PDF document text
    • http://files.longbeachfelines.org/uploads/1/3/1/3/131381976/tirosakemaxed.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/1/0431/2816/0413/files/52311971060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7920/5031/files/zirijamaguja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6690/1148/files/mubilam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0677/8777/files/61360445819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7851/6885/files/5943983948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/gojadezaxibegipasopeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zumimulapowekulusevenire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6965/3663/files/pesenozixozugaleroletijib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/70043483281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8702/0703/files/3963096997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1561/8203/files/16102697696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/23423592182.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 7

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_off00006cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFD 5120 bytes
SHA-256: a83a3d802898b9962e609c641418639211861f0e7d83689aa6e8fb8426254586
font_01_sfnt_off00007e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E72 11228 bytes
SHA-256: 8be29cd16c99ec4ed6f4d5af7e3db0842ca53ba712c3fcaa240f22fa09d317c9

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