Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8c9f02cc1a72bdf…

MALICIOUS

PDF

67.0 KB Created: 2020-08-24 02:22:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4306a1ba2ec6940ce670d62de0ef82f0 SHA-1: 1d70dab475a4385e22f607b1a009fd25aaecd503 SHA-256: a8c9f02cc1a72bdf7c64e80a22b8e9f922c9581ee05878f0abf146ec2612f3e2
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to programming and the redirector URL also contains a programming-related keyword, suggesting a lure. The heuristic firings confirm the presence of malicious redirector links and a link farm within the 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.com/pify?keyword=foreach+loop+in+laravel+blade+template In PDF document text
    • http://files.detourtowonderland.com/uploads/1/3/1/3/131381675/pikixebikosalop.pdfIn PDF document text
    • http://files.hivhope.net/uploads/1/3/1/4/131453406/834b0d1a77ae.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/1/0432/3488/5796/files/99228155293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7056/2209/files/64930725323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0118/3388/files/instrument_cable_selection_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8720/7327/files/nutopatorok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/75653682116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9665/4499/files/70431945717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/the_way_i_am_eminem_biography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2512/0927/files/supply_chain_management_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4521/5656/files/94660834275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3606/5435/files/ways_to_prove_triangles_congruent_answer_key.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 5

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_off0000b60d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB60D 5292 bytes
SHA-256: 2c297cac7f721cfdb64dc1a88a9c5c6911f95da7113d872c92488b62a72b3fbb
font_01_sfnt_off0000c7e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7E1 17068 bytes
SHA-256: a8be9b504070d5e95b563e3f117953a107318814f249eaaf7d32cb3818895c8e

Open this report in the interactive analyzer, or submit your own file for analysis.