Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d756b2c89e8484b…

MALICIOUS

PDF

40.5 KB Created: 2020-09-19 06:30:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c25f5f9acd9b60878263c3ff5171316 SHA-1: d84d82c65116812d078714d2e3e129418c744b9b SHA-256: 7d756b2c89e8484b27fb74957c1eb7e3f4306bf953df3ffd734688e40b59c971
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating it's a redirector link. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the document is designed to lead users to malicious sites, 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.link/wix?keyword=after+eating+dua+arabic In PDF document text
    • http://rilirem.fccfrankfort.org/uploads/1/3/2/6/132680874/wunupipekagudagiveg.pdfIn PDF document text
    • http://files.lancasterjazz.com/uploads/1/3/1/6/131637114/sadaxizawexalumewe.pdfIn PDF document text
    • http://giguxeka.charterfishingbradenton.com/uploads/1/3/1/4/131407588/5235887.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d0fc243f-640f-4ba7-892e-478f2e823898.filesusr.com/ugd/a58502_c8f6c73133554b198dcdf1df85691e96.pdf?index=trueIn PDF document text
    • https://19867a25-dc77-425f-97a9-ab14bda4a674.filesusr.com/ugd/9df9d6_d200703251a848a6b97a32655d8de01f.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2949/4936/files/99546339971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0471/0678/5430/files/81525121532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/harvard_business_review_strategy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1135/8369/files/fuwojabutesipup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8736/2216/files/94193318262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/big_ideas_math_algebra_2_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4364/6614/files/hemoglobin_formation.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_off000061a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A7 5108 bytes
SHA-256: 182cfc2bad974713ebfd52594ad030563426963e8e02e59fc5209a31762f5d35
font_01_sfnt_off00007319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7319 10172 bytes
SHA-256: 0344888bd52ebd1bc899cb5d279c2d0910a504ae9c4d400c7509ec948557be9b

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