Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea3aa1d766e041c1…

MALICIOUS

PDF

49.2 KB Created: 2020-08-23 18:04:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f5fa136fa512794404c40761c81ddf6a SHA-1: 7193a70b8b9eaaf55c51b13104fb3b600c8f70fc SHA-256: ea3aa1d766e041c145a405c962f8ce2d480a0f49eb35858d325639da558774c9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as a Levi's 501 shorts size guide. The ML classifier strongly indicates maliciousness. The document body and embedded link point to 'ttraff.com', a known malicious redirector, which likely leads to further malicious content or malware download.

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=levi%2527+s+501+shorts+size+guide
    • http://files.rwkbicycles.com/uploads/1/3/1/3/131398235/lanojaradegupebigiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/3798/2869/files/61854286041.pdf
    • https://cdn.shopify.com/s/files/1/0435/8481/5259/files/vigurozumagudal.pdf
    • https://cdn.shopify.com/s/files/1/0437/7028/2142/files/5430857286.pdf
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/william_marrion_branham_message_books.pdf
    • https://cdn.shopify.com/s/files/1/0437/8365/1490/files/pestel_analysis_of_mcdonalds.pdf
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/canacol_energy_ltd_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0428/7044/0095/files/22207727369.pdf
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/my_pussy_tastes_like_pepsi_cola.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/8006/files/90023947666.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062a5.bin
c5a46edbdc0fb55ba59f4a0e0ad381017c4b93f4a384aedd58a9561b7b6db8f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x62A5 5248 bytes
font_01_sfnt_off00007496.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7496 1800 bytes
font_02_sfnt_off00007d24.bin
91a9d88450faf9b67fc340cb7e1a092805c2aa30c74bc9634e06d889b48f8d6d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D24 10772 bytes
font_03_sfnt_off0000a210.bin
531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660
pdf-font-stream PDF embedded font (sfnt) at offset 0xA210 16312 bytes