Malicious PDF — malware analysis report

Static analysis result for SHA-256 4662234d79ff4c98…

MALICIOUS

PDF

43.0 KB Created: 2020-08-08 12:15:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 85b60578f01ed69d65dafd33cdae1dd0 SHA-1: ad91d103afd83cc60be7d44dbe3ab180b9713fd2 SHA-256: 4662234d79ff4c9882aa33f54cafa5f4f7c50949a37015b3f3017eef55972ad6
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a common technique for SEO poisoning or directing users to malicious sites. One of the primary links, 'https://ttraff.cc/pify?keyword=aspergillus+parasiticus+pdf', points to known malicious redirector infrastructure. The document body is heavily obfuscated but contains references to the embedded URLs, reinforcing the malicious intent. 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.cc/pify?keyword=aspergillus+parasiticus+pdf In PDF document text
    • http://files.tonymeers.com/uploads/1/3/0/7/130775431/03d7d4e.pdfIn PDF document text
    • http://files.rainbowsfirstaddition.com/uploads/1/3/0/8/130814926/rikoxifome.pdfIn PDF document text
    • http://files.relaxwellpod.net/uploads/1/3/0/7/130739616/desukonexex-tojajugajeludal-wapet-febuku.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/1/0430/4489/6917/files/83517326818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/anteversion_de_la_pelvis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1258/5634/files/affordances_gibson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4835/2406/files/dirikebufotuwiludujaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4061/8134/files/ludzie_bezdomni_lektura_z_opracowaniem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/ganavopawuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7162/5621/files/bourne_identity_movie_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8875/6384/files/wovewozegejupodupon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0569/6407/files/random_four_digit_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8253/1481/files/17298266948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/23941449825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/46631771585.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A95 5312 bytes
SHA-256: 67d952de1f1f099a6096d7154be88de9dcabbbbfff40026b910434689e27f049
font_01_sfnt_off00007cb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB8 10092 bytes
SHA-256: 2093f7165be8ec42f76019006236ef0d36e8a6aefe6e2ee90f6058260e4ed9f3

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