Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9eac6c4aa64be8a…

MALICIOUS

PDF

35.5 KB Created: 2020-08-27 16:37:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05baa2fa88502f9ae853ed8f7a7189a6 SHA-1: 6212b95fca0bf40ec9321d05edac489f4a4c2a35 SHA-256: c9eac6c4aa64be8aff5516918cc64e31e77aa89aeffcc4986b9c7fc8639d86a5
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to potentially malicious redirectors or link farms, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The document body, though partially corrupted, contains text related to a 'Mazak m32 eia programming manual' and includes a suspicious URL, suggesting a lure to trick users into clicking malicious links. The ML classifier also strongly flagged this PDF as malicious.

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.link/pify?keyword=mazak+m32+eia+programming+manual
    • http://files.cupidsinspirationuk.com/uploads/1/3/1/3/131398515/wivejozobofo.pdf
    • http://files.kolbyvancamp.com/uploads/1/3/0/8/130874064/korifineda_roxevopo_jawowifekinaje.pdf
    • http://dosozogaz.goldaes.com/uploads/1/3/1/3/131378950/606088.pdf
    • http://files.catastrophizer.com/uploads/1/3/1/3/131380741/suxuzu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/company_org_chart_template_word.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8077/files/jipadimapazuvepakuropesax.pdf
    • https://cdn.shopify.com/s/files/1/0435/7321/5387/files/34834341246.pdf
    • https://cdn.shopify.com/s/files/1/0455/7848/5925/files/ccnp_300_135_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0461/6585/2312/files/bhairava_dweepam_movie_song.pdf
    • https://cdn.shopify.com/s/files/1/0429/3971/1655/files/lafavuvagofebokigex.pdf
    • https://cdn.shopify.com/s/files/1/0452/5362/3970/files/biochemistry_text_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/6747/4087/files/lijuredi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1043/2930/files/best_buy_on_computers_consumer_reports.pdf
    • https://cdn.shopify.com/s/files/1/0429/5557/1353/files/milozilasopujogazikowat.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5127/files/athanasius_on_the_incarnation_of_the_word.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_off00004bbf.bin
8bb6f47e2dd12959d96dc5be66c30ab282819b0f756c96ed1553f18f9c65ad76
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BBF 5376 bytes
font_01_sfnt_off00005e0b.bin
7189c2df9073ece0ff3a88856e5947ac2a56c526de783b78ec90e76736c3e664
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E0B 10288 bytes