Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e5d19a57fd4494…

MALICIOUS

PDF

41.5 KB Created: 2020-08-03 15:22:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 405f23b039a7d61a982a29d4ff266b06 SHA-1: bb79618b56ea0b4ee3f01ade51a75376af33a153 SHA-256: 02e5d19a57fd4494c42ca8c5bcdf3fe0cf9d7e6806bf5ada4545ab1802a6b16d
154 Risk Score

Malware Insights

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

The PDF contains a link farm designed to mimic search results, specifically for a book download, which is a common lure for phishing or malware distribution. The primary malicious URL, 'https://ttraff.cc/pify?keyword=wings+of+fire+book+in+kannada+pdf+free+download', is identified as a redirector to potentially harmful content. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest an attempt to redirect users to malicious sites, likely as part of a phishing or content-piracy lure.

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=wings+of+fire+book+in+kannada+pdf+free+download
    • http://files.melissahaneyart.com/uploads/1/3/0/9/130968981/7239708.pdf
    • http://files.kumacorp.com/uploads/1/3/0/8/130874170/5f78bd36.pdf
    • http://files.tyeetonga.org/uploads/1/3/0/7/130739883/533841.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/welusi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6993/9612/files/webuxotetigibelegu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/50873362774.pdf
    • https://cdn.shopify.com/s/files/1/0438/1409/2960/files/sift_heads_5.pdf
    • https://cdn.shopify.com/s/files/1/0432/7954/8574/files/baritusuwumomegixib.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vidabuvuwegorowomilamum.pdf
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/37365216095.pdf
    • https://cdn.shopify.com/s/files/1/0435/3520/4511/files/fighting_sound_effects.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/naxenisugivuwu.pdf
    • https://cdn.shopify.com/s/files/1/0435/0623/7604/files/96783446919.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_off000063cc.bin
d707370a5bbe7455909f6606b836723dbe81d4012a3cb0757af93125e0d9672d
pdf-font-stream PDF embedded font (sfnt) at offset 0x63CC 5516 bytes
font_01_sfnt_off000076bd.bin
46d9e7e3d65b75bb2d0e07e6f35e0b7c9f7b95cfd78bc829f091f09d18f42d36
pdf-font-stream PDF embedded font (sfnt) at offset 0x76BD 10088 bytes