Malicious PDF — malware analysis report

Static analysis result for SHA-256 e03f3d0a684f5b3b…

MALICIOUS

PDF

36.3 KB Created: 2020-07-25 10:54:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db586f68cc24f76cfd013a1f0df79fab SHA-1: 29f1019b5329735387462a613b7203bf23045dc5 SHA-256: e03f3d0a684f5b3b0ab3c758be7d56f90910ea1e608e27dd81aef7baa5562178
152 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. Additionally, it contains a large number of embedded links, many hosted on Shopify, suggesting an attempt at SEO poisoning or a link farm. The primary malicious URL identified is ttraff.com, which is known for redirecting to malicious content. The document body itself is largely unreadable binary data, providing no further context.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.com/pify?keyword=pacsun+formal+dresses
    • http://files.singoutasia.org/uploads/1/3/1/4/131437532/tupubug.pdf
    • http://files.marylorart.com/uploads/1/3/2/8/132815872/c43464651.pdf
    • http://files.kelownaplasticsurgery.com/uploads/1/3/1/4/131437117/guwuririn.pdf
    • http://files.storiesforchrist.com/uploads/1/3/2/3/132302732/16d7588d5cd3a37.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/29960754278.pdf
    • https://cdn.shopify.com/s/files/1/0434/2621/8134/files/fezopixuvikiximidi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7310/9152/files/puxidipojaxesawiwif.pdf
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/xevodeferupowemenerinoni.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdf
    • https://cdn.shopify.com/s/files/1/0437/1673/9222/files/veterupodirek.pdf
    • https://cdn.shopify.com/s/files/1/0430/2969/2577/files/libisotavat.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6567/files/12311678683.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lewajoranuputefikilos.pdf
    • https://cdn.shopify.com/s/files/1/0437/6631/7205/files/puxemovixejusiminuvomiki.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/wegidikuwideligaro.pdf
    • https://cdn.shopify.com/s/files/1/0432/5956/0094/files/vonokofujaf.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000537c.bin
a43f377c5e651321199cbba68aad7a04204176923be5c18fbe0554aa088ef60f
pdf-font-stream PDF embedded font (sfnt) at offset 0x537C 4920 bytes
font_01_sfnt_off00006405.bin
2ffeb97bb092a75535f34f92579c013d7dce56368635b4425fdd1f64ab99753a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6405 9500 bytes