Malicious PDF — malware analysis report

Static analysis result for SHA-256 67153243f8ab91c5…

MALICIOUS

PDF

33.4 KB Created: 2020-08-22 11:09:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 12f7c9037ccb18fb5377ae846e32cb33 SHA-1: 5b8f3b40bdb11d88dd0fdee1b0e4e2e461617583 SHA-256: 67153243f8ab91c559ace77863f4981dcf5c1cf6b97b339174b0b00cd622e064
194 Risk Score

Malware Insights

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

The PDF contains a link farm and redirects to a known malicious URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the same lure text and URLs as the heuristic findings. The presence of embedded URLs and the ML classifier's high confidence score support the malicious verdict.

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=blank+map+of+central+america+worksheet In PDF document text
    • http://lasigupes.orangecountycoffeeroasters.net/uploads/1/3/2/8/132816066/rejiwosuzonupep.pdfIn PDF document text
    • http://vosiboru.maidans.org/uploads/1/3/1/6/131636908/soledu-nezezegexata-jikabuje.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/1/0439/3353/2315/files/nanoxewisozaxas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/filifofumulexikalexos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3646/5559/files/download_pdf_agama_islam_kelas_11.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4031/6311/files/miwimogemofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/rekilos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/fogefagunofobibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/tinkers_construct_all_modifiers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/4897/5774/files/funny_games_imdb_parents_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2739/0615/files/68443686469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1779/7785/files/wuxorujukesudotutabojel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/89041312225.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 1

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_off0000443d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x443D 5460 bytes
SHA-256: efd4faa73a1f4d734120278cb9db39858b3c8ddc884a5d02e7d9c4aab38cad75
font_01_sfnt_off000056b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56B5 9856 bytes
SHA-256: 1d79545ab2707026d696d21ab589739614685c2fbf7559c1e67d4d65d225988a

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