Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bea39946fd9a556…

MALICIOUS

PDF

44.6 KB Created: 2020-08-03 11:23:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76ec0ef7de8817067d2141021d5437eb SHA-1: 55af9350987e7af06dc5af12f28f906b069c45dd SHA-256: 5bea39946fd9a556b260653c7ad3eaac38901136f228dcc69c0cff17b41fafc3
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a primary redirector pointing to a known malicious infrastructure. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to lure the user to a malicious site. The ML classifier strongly indicated maliciousness, and the presence of numerous SEO-linked PDFs further supports a malicious intent, 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=for+your+glory+tasha+cobbs+download In PDF document text
    • http://files.nadianiyazi.com/uploads/1/3/0/8/130814596/6870909.pdfIn PDF document text
    • http://files.campingdeberghoeve.com/uploads/1/3/0/7/130776821/nojiwufoxu.pdfIn PDF document text
    • http://files.dialyzermedicals.com/uploads/1/3/0/7/130775363/6350989.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/1/0432/8754/3964/files/misasonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5625/8454/files/guxefojevezuruz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/30474850659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0261/7252/files/altec_lansing_vs4121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/57787838214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7952/2722/files/80978995865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/32452510297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7695/1965/files/con_funk_shun_love_s_train.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51982080438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1261535930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/77465961778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6439/2866/files/rixibusadimizunojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6204/2529/files/dj_air_horn_sound_effect.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7058/7029/files/gixinufoxowamefonefo.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 2

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_off00006f37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F37 5488 bytes
SHA-256: 24bce816bd05d36ab8732250640d11d423e4b0435d431934eb7d3affd2c39527
font_01_sfnt_off000081f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81F7 10428 bytes
SHA-256: 67e75b1e191fc3f81a7c1b6cc145a3e8a28c82204d1e1eb08060f8db23f5f7a7

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