Malicious PDF — malware analysis report

Static analysis result for SHA-256 004a76be4688da29…

MALICIOUS

PDF

43.0 KB Created: 2020-08-18 23:48:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 262aa642ca9e9b15575097ea1fc32c89 SHA-1: 79dd2cfd034f47744a2f699ea16208b555536f4f SHA-256: 004a76be4688da29806552e4969c5ad741b730a530563e1aa8bb1e137374a8ee
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious sites. The document body, though heavily obfuscated, contains a URL that points to a redirector, which in turn links to other PDFs. This pattern is consistent with phishing or malware distribution campaigns.

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=molecule+compound+element+worksheet In PDF document text
    • http://files.paperandpoppies.com/uploads/1/3/0/9/130969426/depigikudivi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8126/9401/files/pojuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9429/5203/files/novekunitijenulogel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6107/6375/files/11198519933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9330/2178/files/45632045535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3669/5959/files/venimaxinipusuxutakopurim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7252/0352/files/berliner_platz_3_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9540/9311/files/21609632543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5597/2501/files/neural_networks_and_deep_learning_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7238/8246/files/babudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/0821/6487/files/bionicle_makuta_s_guide_to_the_universe.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC5 5100 bytes
SHA-256: 078c503ae84951ae489d0b805441cb04d554d405faa6e1c0b02ce9750e6b0b26
font_01_sfnt_off00006f01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F01 10008 bytes
SHA-256: 06d4e3a6bd005260dad822ba67746ff71576ef1b63500fd7ce6aebe23e0ebbda
font_02_sfnt_off00009143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9143 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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