Malicious PDF — malware analysis report

Static analysis result for SHA-256 972cef4c6f1e8579…

MALICIOUS

PDF

41.3 KB Created: 2020-08-20 00:01:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83ef10e7cac454c842d04446705efcca SHA-1: e405dba263dc901c43919cb9cde3a7b2e639c159 SHA-256: 972cef4c6f1e85799c7f091c6f8e11fc610db5e90404d1d745b81f3238379d58
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic identifying a direct link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text referencing 'Promo coupon template' and the malicious URL, suggesting a social engineering lure. The presence of a link farm further indicates an attempt to distribute malicious content or traffic.

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=promo+coupon+template In PDF document text
    • http://files.jennefromm.com/uploads/1/3/1/8/131871555/2797909.pdfIn PDF document text
    • http://files.dianamariarossiart.com/uploads/1/3/1/6/131636586/84d11c6cb.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/1/0435/5971/4971/files/automatic_machine_learning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2358/7733/files/basics_of_computer_science_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6871/0294/files/kenmore_ultra_wash_dishwasher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8530/7808/files/walt_disney_world_orlando_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8031/1203/files/708918392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/bsc_1st_year_mathematics_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3604/7522/files/burnt_norton_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4116/8283/files/5924789138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6655/5557/files/38018108165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/bagixegivem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57308776079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5430/9284/files/biogeography_free_download.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_off00006448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6448 4904 bytes
SHA-256: bdf06a04f198c547671de0692f410738ebe216ffea82bc6643252cd486853879
font_01_sfnt_off000074da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74DA 10524 bytes
SHA-256: cdc84a0ea39a7ab6c6134a37a66b4973fe34a4f111eea11ff58e4710060afff7

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