Malicious PDF — malware analysis report

Static analysis result for SHA-256 19bc2c8fb06f6c91…

MALICIOUS

PDF

49.2 KB Created: 2020-08-02 00:38:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99db92370e041e786045432f1e92443f SHA-1: 5e19a24cc458ab71c0f20155f6affee042095dc1 SHA-256: 19bc2c8fb06f6c911375e484f7a7a5303b962feb2789810f5ccc46f15d048e84
150 Risk Score

Malware Insights

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

This PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, https://ttraff.com/pify?keyword=absolute+rc+plane+sim, is presented as a download for 'Absolute rc plane sim', indicating a social engineering lure. The PDF also hosts a large number of other links, many pointing to Shopify, which is characteristic of SEO link farm techniques used to obscure malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=absolute+rc+plane+sim
    • http://files.ryladistrict7255.com/uploads/1/3/0/9/130969403/7626670.pdf
    • http://files.teamthanksai.com/uploads/1/3/1/8/131871518/b0ead0a4d.pdf
    • http://files.stellarhealingsc.com/uploads/1/3/0/9/130969368/be06a2a.pdf
    • http://files.sweetwhiskshoppe.com/uploads/1/3/2/6/132682471/3629897.pdf
    • https://cdn.shopify.com/s/files/1/0431/9507/2674/files/blaster_worm_source_code.pdf
    • https://cdn.shopify.com/s/files/1/0433/6441/7695/files/sorted_list_java.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/6491276195.pdf
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/zelaxipifugavigaximo.pdf
    • https://cdn.shopify.com/s/files/1/0436/5172/7513/files/18782684227.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/74259616842.pdf
    • https://cdn.shopify.com/s/files/1/0427/5562/1031/files/5378026295.pdf
    • https://cdn.shopify.com/s/files/1/0434/3801/4616/files/gikiluxavaka.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31056735454.pdf
    • https://cdn.shopify.com/s/files/1/0431/6689/2191/files/zigelav.pdf
    • https://cdn.shopify.com/s/files/1/0434/1104/6558/files/ammo_synthesizer_gungeon.pdf
    • https://cdn.shopify.com/s/files/1/0431/8534/0580/files/befovajigetesuwalukip.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/
    • https://cdn.shopify.com

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000846d.bin
629eed6873f05a7adb626cd320ae6b4c3c687f952a946af3bd1d23d0791c6e1a
pdf-font-stream PDF embedded font (sfnt) at offset 0x846D 5208 bytes
font_01_sfnt_off00009605.bin
4b979793d186778a89e0e67cade5a71e51dd697ea2eb7f5bc37ff5fde5f2f15d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9605 9856 bytes