Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cbc429f0a2f067b…

MALICIOUS

PDF

42.1 KB Created: 2020-08-04 17:40:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 33fd9b62f3e53d045d03414a5bf36f54 SHA-1: 2eebb1638ab986ce6dca2e49e40f8067bde70efb SHA-256: 9cbc429f0a2f067bac9fd5065db76a21bf834a6d8e606febc64b110de365cc4b
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, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggered this heuristic. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be directing users to malicious sites via embedded links.

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=way+back+into+love+piano+notes+pdf In PDF document text
    • http://files.resopstrategies.com/uploads/1/3/0/8/130873875/8885345.pdfIn PDF document text
    • http://files.paqu.org/uploads/1/3/1/8/131871894/vibofukupu_ruzererijolibij.pdfIn PDF document text
    • http://files.sfnpaintparties.com/uploads/1/3/2/6/132682565/tifobava.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8004/7010/files/zuxalalebumuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/35666264251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4991/7347/files/d_d_4e_heroes_of_shadow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/rarovonop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4114/4483/files/convert_mht_file_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6642/4477/files/66647100643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6544/2455/files/55824239441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8980/2904/files/jawugejivezutikitaziwem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6466/3967/files/south_sudan_history.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/iran_sex_pic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/dujiwililixolupuvijaju.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F34 5220 bytes
SHA-256: e079c87039393d26c581d02f5e5cf55f3ba48fb2d02f357e7276de6792ee245a
font_01_sfnt_off00006118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6118 14120 bytes
SHA-256: 054689d8e712a6d9d1656673e35d14c5e38b3090f43778ff5a488083c4c8606f
font_02_sfnt_off00008d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D9D 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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