Malicious PDF — malware analysis report

Static analysis result for SHA-256 f38e14c8625d806b…

MALICIOUS

PDF

33.5 KB Created: 2020-08-24 08:06:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa6cbb9334bed3383848af5b846a97ed SHA-1: 536ffc67da9d73f7fcb2d22d1d911b900179988e SHA-256: f38e14c8625d806b98182a2835e63194041621b7c8a1e178897e1a142e961bcf
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a Jawbone earpiece manual. This indicates a phishing or scam attempt. The document also features a large number of embedded links to other PDFs hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content. No scripts were extracted from this sample.

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=jawbone+bluetooth+earpiece+manual
    • http://files.bodyandmindtraining.com/uploads/1/3/1/3/131384284/wimilufaladikogasal.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94766401197.pdf
    • https://cdn.shopify.com/s/files/1/0432/8289/0912/files/27597336409.pdf
    • https://cdn.shopify.com/s/files/1/0432/9809/5262/files/79289112874.pdf
    • https://cdn.shopify.com/s/files/1/0435/3874/3450/files/20_gauge_galvanized_sheet_metal_weight.pdf
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/21318697953.pdf
    • https://cdn.shopify.com/s/files/1/0430/8900/2645/files/33430373575.pdf
    • https://cdn.shopify.com/s/files/1/0437/7647/5290/files/35294439141.pdf
    • https://cdn.shopify.com/s/files/1/0433/6658/0382/files/96961658954.pdf
    • https://cdn.shopify.com/s/files/1/0434/7432/1560/files/rujiwebujadekegikivube.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2465/files/55188061601.pdf
    • https://cdn.shopify.com/s/files/1/0434/9476/8792/files/nolajemekakivevizuxagesi.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_off000042b2.bin
8f4a50b8b7a0e412857c3db5b657e61d4a17ed1125b0e411dafa19e2656a503e
pdf-font-stream PDF embedded font (sfnt) at offset 0x42B2 5216 bytes
font_01_sfnt_off00005454.bin
40a6974e368f8a5dc947b1a5e265d1544f1ee64261f9a853e0355ad38107d3ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x5454 11188 bytes