Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7a82aeafefa843e…

MALICIOUS

PDF

49.2 KB Created: 2020-08-07 04:52:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92f84c6486092a9379362159fb38a391 SHA-1: 6465a1a165494f4907a982e77377af546e060284 SHA-256: a7a82aeafefa843e1596bfd53562b38ada37d2513bbfadc46d531086ea5cf8f4
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources hosted on Shopify. One prominent link, 'https://ttraff.ru/pify?keyword=vbu+b+tech+syllabus+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous links and the malicious redirector indicate a likely attempt to distribute malware or conduct phishing by directing users to compromised or malicious sites.

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.ru/pify?keyword=vbu+b+tech+syllabus+pdf
    • http://files.roxysloclashnbrowbar.com/uploads/1/3/1/3/131380024/dotujovejojowojiv.pdf
    • http://files.stpetetowtrucks.com/uploads/1/3/0/7/130776864/sodelewopumi_gisiwezaxenog.pdf
    • http://files.georginawithers.com/uploads/1/3/1/3/131398108/3782566.pdf
    • http://files.tosharollins.com/uploads/1/3/1/3/131380175/6798f1648b38.pdf
    • http://rubufe.hikingnewfoundland.com/uploads/1/3/0/7/130775350/wabijixif-dagoruj-navutixem.pdf
    • http://files.stpetetowtrucks.com/uploads/1/3/0/7/130776864/sodelewopumi_gisiwezaxe
    • https://cdn.shopify.com/s/files/1/0440/3170/5238/files/6492971740.pdf
    • https://cdn.shopify.com/s/files/1/0437/0720/3739/files/3719119441.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13652925252.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/77373557642.pdf
    • https://cdn.shopify.com/s/files/1/0435/1367/5928/files/pakuleziberutag.pdf
    • https://cdn.shopify.com/s/files/1/0430/8523/4338/files/19663335901.pdf
    • https://cdn.shopify.com/s/files/1/0435/8206/2753/files/tewefopewitazegunozogipe.pdf
    • https://cdn.shopify.com/s/files/1/0433/6805/4940/files/65788980576.pdf
    • https://cdn.shopify.com/s/files/1/0431/3799/0805/files/automatic_door_control_system.pdf
    • https://cdn.shopify.com/s/files/1/0437/9358/0189/files/caracteristicas_da_familia_fabaceae.pdf
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/wunedogalaze.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/introduccion_a_la_administracion_publica_argentina.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_off0000753a.bin
2ffdb6d1286364982ddad7dfe9239bf4382b469e1446feddfbc92f2c1b4b2e37
pdf-font-stream PDF embedded font (sfnt) at offset 0x753A 5356 bytes
font_01_sfnt_off0000877c.bin
308b9f7fefcdf68fcd3a3a0f6d7ee2db99ac77707eb8765d4b48b7dce4b27338
pdf-font-stream PDF embedded font (sfnt) at offset 0x877C 15520 bytes