Malicious PDF — malware analysis report

Static analysis result for SHA-256 194b72d334978ec3…

MALICIOUS

PDF

47.2 KB Created: 2020-08-18 17:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 16e1d42a0729a8ecf3b9bcadfa1c472a SHA-1: 59ee7129849aac52a22bcaabe288c66c8d3650e7 SHA-256: 194b72d334978ec361c1d9ee5afc836456f311c527a1e3349574f379b9d5c043
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document is designed to lead users to malicious infrastructure under the guise of providing a download, likely for phishing or malware distribution.

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.ru/pify?keyword=deepmind+6+manual+german In PDF document text
    • http://files.freshskintattoos.com/uploads/1/3/0/7/130775679/pasibol_zavisomomiv.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/1/0433/5448/8990/files/alphabet_military.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0390/2112/files/wow_classic_tailoring_guide_horde.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/0412/0475/files/a_jar_of_mind_maggots.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2812/6618/files/8637296181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7780/3925/files/binovobupufuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/3006/3773/files/list_of_all_formulas_in_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/9853085564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7305/2575/files/ccie_routing_and_switching_v5_volume_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8351/3499/files/55772577529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/82412877570.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_off00007af7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF7 5256 bytes
SHA-256: b63cbaba290aa4e0a195cebee3dd120d8757ea42b363d9de98c1abac25fb13c9
font_01_sfnt_off00008cb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB6 10480 bytes
SHA-256: 6d9354ef2db5f256db2a6612a86282f4f841e7d93d2212209aa8ae81e27a35e6

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