Malicious PDF — malware analysis report

Static analysis result for SHA-256 7baefb665f878b49…

MALICIOUS

PDF

42.8 KB Created: 2020-08-12 08:01:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4aa6064459664a0e20298704782c351a SHA-1: 81b5eb33179be6ad6b0fe44a095fb5a116b067e3 SHA-256: 7baefb665f878b4901f30f400960b404597b8c16fb3df7bade4da6331f33a2cf
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL designed to lure victims into clicking on malicious content. The embedded URL points to a redirector, which is a common technique for distributing malware or conducting phishing campaigns. The ML classifier strongly indicated maliciousness, supporting the presence of malicious 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/wb?keyword=construction%20health%20and%20safety%20management%20plan%20pdf In PDF document text
    • http://gepivage.villacreative.org/uploads/1/3/0/7/130740522/dedet-lonugud-fizuloj.pdfIn PDF document text
    • http://files.serviceprograms.org/uploads/1/3/0/7/130775556/fe9ea8bcf535e49.pdfIn PDF document text
    • http://files.buildingbrilliantmindsonline.com/uploads/1/3/0/8/130874478/64f042.pdfIn PDF document text
    • http://memik.nestmboston.com/uploads/1/3/0/9/130969060/e8664.pdfIn PDF document text
    • http://popumofaz.sdedesigns.com/uploads/1/3/1/0/131070420/9b61730f.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/1/0439/2553/6936/files/76265439811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5597/2501/files/fowojujejulonedoforeroxar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0259/2410/files/45599028677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9094/3904/files/tamar_king_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3511/5175/files/fapij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0571/4338/files/94885574798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5037/5070/files/momavujajozagajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3708/8154/files/char_broil_electric_smoker_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/phonetic_symbols_vowels.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5275/9190/files/rudasekoxan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8708/5220/files/99543231657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1420/9186/files/20558438821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7812/3674/files/81950733403.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_off00006756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6756 5576 bytes
SHA-256: 46f85b16704a0a2446862d488359cc8a746b31468277415e43ce145c25db1095
font_01_sfnt_off00007a28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A28 10344 bytes
SHA-256: 1a7650b8be496eeda8be4acbf5e9e9f73453f809a2db6ae979e139583ff238eb

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