Malicious PDF — malware analysis report

Static analysis result for SHA-256 597102372207e27f…

MALICIOUS

PDF

55.1 KB Created: 2020-08-22 18:14:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7e45d2570726db6ec6f017d8e1092fc SHA-1: 49d4cc42e07f3cdda6ba0ce4fe5a63ba70ff0c5a SHA-256: 597102372207e27fd0fffdd03903c116875c4388eeb66a30ad3762a83452a1c6
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is also present in the document body. Additionally, a PDF link farm heuristic indicates the document is designed to host numerous external links. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering, using a popular media title to entice clicks to malicious infrastructure.

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=game+of+thrones+season+7++toxicwap
    • http://files.dywfineart.com/uploads/1/3/1/8/131871537/cc2dbe6d8.pdf
    • http://files.lifootcarepc.com/uploads/1/3/1/4/131452942/fenazel-kamolukewowi-ronefeduregonu-guwiniluxamuw.pdf
    • http://tekugap.karenperkinsauthor.com/uploads/1/3/1/3/131398455/4443628.pdf
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/bewivemabexatiduto.pdf
    • https://cdn.shopify.com/s/files/1/0435/2868/3672/files/atmosphere_layers_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0437/8581/4173/files/1142119173.pdf
    • https://cdn.shopify.com/s/files/1/0448/0620/9702/files/87527651997.pdf
    • https://cdn.shopify.com/s/files/1/0435/6037/0339/files/nukozugivox.pdf
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/cctv_camera_types.pdf
    • https://cdn.shopify.com/s/files/1/0433/1359/4526/files/82311741420.pdf
    • https://cdn.shopify.com/s/files/1/0430/3847/4397/files/27837387467.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92283418618.pdf
    • https://cdn.shopify.com/s/files/1/0439/1682/0635/files/sulafopibezigobezaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/7737/6936/files/prevent_mac_from_sleeping.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008c0e.bin
89a5019b1e22e8551c49f4bf6effae5c2032c7ba6134075a5c41a0167843f624
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0E 5280 bytes
font_01_sfnt_off00009dfb.bin
be1a9436cbb87f593883be9f2b074e8d9f049ed7a1433685e14300b9807c79e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DFB 10240 bytes
font_02_sfnt_off0000c0ce.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xC0CE 4324 bytes