Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e837f1401f64d05…

MALICIOUS

PDF

42.7 KB Created: 2020-08-25 07:48:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac60a042c8b1f8f9fc18d9ffd9e3a0bc SHA-1: 97cbc796ad15f4e8e7c03a539d5fe8d40a08d579 SHA-256: 0e837f1401f64d05dd4c3bbe17413e1af88dbaeef411d52322331b81854232dd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a malicious redirector link disguised as a weather report. This redirector leads to a link farm of numerous other PDF documents, likely intended to obscure the malicious destination and potentially engage in SEO manipulation for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of multiple redirector links supports this assessment.

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=grandfather+mountain+weather+report In PDF document text
    • http://files.palmandbowl.co.uk/uploads/1/3/0/7/130776460/7973499.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/1/0429/9508/9571/files/articulos_cientificos_de_biologia_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0303/4276/files/75094266445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5397/2633/files/11982930406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2402/2680/files/pepofopesudofelajeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8125/2512/files/duketurajobokatezume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/el_cambio_climatico_no_existe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6948/8798/files/1000_rounds_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9950/5311/files/wunotexukul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5438/9665/files/71989351596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2301/4824/files/gipexegoxinenofukedawu.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_off00005dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEE 5196 bytes
SHA-256: b0f7095c965fd4b8810376b5e0ce8f649dbf0baabb9477364b3d044c4131298f
font_01_sfnt_off00006f83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F83 15012 bytes
SHA-256: 68b5c54b27683dcb4d7e792a481b6eb706afe6cfbf22c39c13d4c8542d520975

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