Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff7fe03fc86eabc3…

MALICIOUS

PDF

41.0 KB Created: 2020-08-03 23:46:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: be1efcf39b557ff6db55ec35648e5d84 SHA-1: 5cc4a127aca568d2589d2ab661abf2b4ded393e4 SHA-256: ff7fe03fc86eabc3cdadc9a2f1aa071bbafd1d79771dc70d590d4f14bc040914
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. The presence of a link farm further supports the malicious intent of directing users to external, potentially harmful, content. No scripts were extracted from this sample.

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=que+es+el+anabolismo+y+catabolismo+pdf In PDF document text
    • http://rizeg.bzdickstudio.com/uploads/1/3/1/4/131437812/3872258.pdfIn PDF document text
    • http://files.presscoffee2go.com/uploads/1/3/0/7/130775071/4e94c27b9d9d9.pdfIn PDF document text
    • http://files.thegreedycouple.com/uploads/1/3/0/7/130738988/33975.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/1/0429/0733/6857/files/xonabememawavatamux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1297022614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0363/4079/files/masilodejusakon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3957/9546/files/nepezewavexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2482/4995/files/96485030628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/minecraft_pc_xbox_controller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/31636488235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/toxaxivasobovovud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9784/8996/files/58883866850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7410/8057/files/rewilusipufikogad.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 8

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_off00005e0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E0B 5508 bytes
SHA-256: 5df25b6edf9a922a0c4d2f4f417e3693cfabebc760c7e055b3cc98b699f0e5a1
font_01_sfnt_off000070b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B7 11300 bytes
SHA-256: 8442271bf56a4a4b03cb44f29aa8a11efc7bc8d1a9dcfbd9b9dd309614a1770a

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