Malicious PDF — malware analysis report

Static analysis result for SHA-256 41ca1bca32a2f2ac…

MALICIOUS

PDF

55.9 KB Created: 2020-08-22 04:28:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b040db8f113b69fd557787973d73fa0c SHA-1: 3e1f2035305e937a45466ce077e7b3a62511d5d2 SHA-256: 41ca1bca32a2f2acf44a0cc8cc65b259542307710d5413073f9bee6df7c68970
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Gta heist crew guide' and includes the malicious URL. The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links, suggesting a link farm for SEO manipulation or to obscure the true destination. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this PDF.

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=gta+heist+crew+guide In PDF document text
    • http://dutusizo.aubsblog.com/uploads/1/3/1/4/131438572/3650268.pdfIn PDF document text
    • http://datutefuz.camphillvillage5k.org/uploads/1/3/0/7/130775918/zobixalixuteb.pdfIn PDF document text
    • http://files.hawaiis1000friends.org/uploads/1/3/2/7/132710603/nigobivesaroze.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/1/0429/7680/5023/files/kufirazip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2432/6564/files/58633215843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0873/6927/files/general_system_theory_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4985/1811/files/xevadafafufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9997/9930/files/68209799830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2961/7057/files/65211964836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2582/4929/files/powered_by_4images_kommentar_posten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4989/3531/files/mapa_aquitania.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0974/4789/files/80528466546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/isabel_de_los_rios_beyond_diet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/josuzafegeda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/54988015040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4325/3406/files/us_history_books_for_high_school.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_off00009cc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CC2 5292 bytes
SHA-256: d67f6ff27711e8d0730b4600c82f5a87a16bb690f093541d689b91a61d8b59e2
font_01_sfnt_off0000aecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAECC 10420 bytes
SHA-256: 2a6f3a6ff3a6645ef61ffee4c1d6becec2ee2508caad3c84ba8a4dab752e4a8a

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