Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d098a2a7226d490…

MALICIOUS

PDF

42.8 KB Created: 2020-08-02 15:28:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d27d1a890d4ddc249a08948a5190999c SHA-1: a5a0e59732a98ba51f607dbf7d3cd9e5ec718573 SHA-256: 0d098a2a7226d4909e78d19401e29383b8f24b032cce97932b510d44aa4be2f7
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. This redirector, `https://ttraff.cc/pify?keyword=visual+essentials+of+anatomy+physiology+martini+pdf`, likely leads to a phishing page or malware download. The presence of a large number of external PDF links suggests a link farm or SEO poisoning attempt to distribute malicious content.

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.cc/pify?keyword=visual+essentials+of+anatomy+physiology+martini+pdf
    • http://files.replicate3d.co.uk/uploads/1/3/0/9/130969190/3233781.pdf
    • http://files.evergreenhstheatre.org/uploads/1/3/1/4/131482819/lalivokofuwako_mawiweka_pogegezepi_xifapeme.pdf
    • http://files.befreecounselling.com/uploads/1/3/1/4/131452938/9a29f7.pdf
    • http://files.acgraleighcapitalconference.com/uploads/1/3/1/8/131872048/zumujakarevemaxifo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/56720887947.pdf
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/tobegu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/19635564802.pdf
    • https://cdn.shopify.com/s/files/1/0429/0369/9615/files/bofobuxexigixarawemagoje.pdf
    • https://cdn.shopify.com/s/files/1/0428/5480/9756/files/4402788586.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fixasitisajixumazurezeve.pdf
    • https://cdn.shopify.com/s/files/1/0431/8176/8864/files/furos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90262961418.pdf
    • https://cdn.shopify.com/s/files/1/0437/5176/8225/files/xaxoroxonimulozaxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65028435792.pdf
    • https://cdn.shopify.com/s/files/1/0433/1533/1227/files/50381605906.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006634.bin
0c643fd8509c6386310da247cab8a35ea0e7af0debcf8ad428c02bfb5b539983
pdf-font-stream PDF embedded font (sfnt) at offset 0x6634 5520 bytes
font_01_sfnt_off000078db.bin
63a5ba67e234707392a1e3c420b91b2947ffe4a59669fb2452a8c1cd5b5aa781
pdf-font-stream PDF embedded font (sfnt) at offset 0x78DB 10428 bytes