Malicious PDF — malware analysis report

Static analysis result for SHA-256 04c4cc0b6e04ab76…

MALICIOUS

PDF

41.7 KB Created: 2020-08-25 07:21:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8123e6e802fcdcd75d2b8da3a7427ad SHA-1: 5d60e63927b1a16618ceb0b71fcbcef0f82696ef SHA-256: 04c4cc0b6e04ab7694f501200448f2b00a8115c327162fd574e126405d688bd3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains a URL that matches the suspicious redirector. The ML classifier also strongly flagged this PDF as malicious, supporting the conclusion that it is designed for phishing or malware distribution.

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=oxford+dictionary+pdf+file+free In PDF document text
    • http://ruvobe.rangebourne-pets.co.uk/uploads/1/3/1/4/131453960/4217390.pdfIn PDF document text
    • http://wifedofe.designauthentic.com/uploads/1/3/0/7/130775961/subagusewozuramis.pdfIn PDF document text
    • http://meraf.abclassics.nl/uploads/1/3/1/6/131637814/mawabawumixalisavufu.pdfIn PDF document text
    • http://files.hattrick3c.com/uploads/1/3/1/3/131379894/pegaduf_fogadafozo_fivug_mikuxukij.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/1/0432/7630/4544/files/balance_sheet_of_reliance_company_2020_18.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/92601814821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5192/6183/files/kundali_bhagya_video_kare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5823/2473/files/42607275108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4047/2229/files/10583760330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/in_n_out_spread_nutrition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6113/2968/files/xuvuzexok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1028/5990/files/zujaxapeboxusuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3363/2661/files/comparison_between_management_and_administration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61066914906.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 6

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_off00006654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6654 5168 bytes
SHA-256: 62832e8c3da22acdb7a23a7d4e89cac96c82983f2ee692662639dfb8841b170e
font_01_sfnt_off00007806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7806 9976 bytes
SHA-256: d1dd05cabf6af8c8bb32c4a993674475bd2319238beafced3b4418b7bdebda5e

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