Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f20689ce2f654fe…

MALICIOUS

PDF

117.6 KB Created: 2020-08-08 19:39:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce2ed09978da969b2cb0b495b090f260 SHA-1: 51082f14deddfb5e704ac5b1807d020333b50be0 SHA-256: 1f20689ce2f654fef0dabcfd4b7f89858ace70fb022c55613913be08daf39604
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains heuristics indicating it's a malicious redirector and part of a link farm, suggesting it's designed to lead users to malicious sites. The document body, though heavily obfuscated, contains a URL that aligns with the redirector heuristic. The presence of numerous external links, including one to a known malicious redirector, strongly suggests a phishing or malware distribution attempt.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=manual+de+auditoria+fiscal+pdf
    • http://files.morningstarcommunity.church/uploads/1/3/1/0/131070161/lojodugonitite-rekadelejego-goxapujunekop.pdf
    • http://files.fatbellybassmasters.com/uploads/1/3/2/7/132740552/591523.pdf
    • http://files.nicoleandersonconsulting.com/uploads/1/3/1/4/131437725/6480490.pdf
    • https://cdn.shopify.com/s/files/1/0434/5066/3062/files/39464643116.pdf
    • https://cdn.shopify.com/s/files/1/0431/6640/0673/files/28810611396.pdf
    • https://cdn.shopify.com/s/files/1/0435/2681/5895/files/94467452485.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/64435642989.pdf
    • https://cdn.shopify.com/s/files/1/0434/5787/2033/files/pierre_bourdieu_sociologia.pdf
    • https://cdn.shopify.com/s/files/1/0437/3453/2245/files/21031845464.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7006/files/super_crazy_looms.pdf
    • https://cdn.shopify.com/s/files/1/0438/0118/2369/files/rofusiligapobumubirumug.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/76356671282.pdf
    • https://cdn.shopify.com/s/files/1/0435/5699/5233/files/handbrake_compress_video.pdf
    • https://cdn.shopify.com/s/files/1/0430/8851/1130/files/32322671716.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_off00018412.bin
f842318cd3ed7feb64ac0ef6f9b8eca91349773c0692cc18f4da39c767df6ceb
pdf-font-stream PDF embedded font (sfnt) at offset 0x18412 5036 bytes
font_01_sfnt_off0001953e.bin
a212f6e0f4afcb91ce752998f42fdb28e0f317e749bd08ce21e67732bed61fc7
pdf-font-stream PDF embedded font (sfnt) at offset 0x1953E 11068 bytes
font_02_sfnt_off0001baea.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1BAEA 4324 bytes