Malicious PDF — malware analysis report

Static analysis result for SHA-256 9950d45fb8024381…

MALICIOUS

PDF

47.3 KB Created: 2020-08-03 20:19:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b441ee49e7a32bfc2b7fe0bd220f74c3 SHA-1: 580f414b3b7c5652484d82d4c5f7d553e4b01908 SHA-256: 9950d45fb80243814877e1c8bc48c5e40bb3fb6f0a516b1c72b17d49e8ffa3d1
180 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised with a seemingly relevant keyword. The document also contains a large number of external links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document may also attempt to solicit sensitive information like private keys or passwords, further reinforcing the malicious intent.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=encryption+algorithms+in+java+pdf
    • http://files.airbrushinggourds.com/uploads/1/3/0/7/130740053/leruxi_sesomapakepoda_zomisabebuxux_megero.pdf
    • http://files.misslorenz.com/uploads/1/3/1/4/131408798/funixowotike-zonuxazafizan-bevemezisugajo-sabigem.pdf
    • http://files.jake-schick.com/uploads/1/3/0/9/130969663/paselusifu.pdf
    • http://files.swfva.com/uploads/1/3/0/7/130740465/ecf1d68.pdf
    • https://cdn.shopify.com/s/files/1/0432/8272/7067/files/lolizasebexa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0099/5741/files/74249961707.pdf
    • https://cdn.shopify.com/s/files/1/0431/1737/9745/files/72724913737.pdf
    • https://cdn.shopify.com/s/files/1/0435/9149/9935/files/lovudoxizamigirofa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zutowujovepenatugipo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9520/3745/files/tudegoke.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65028435792.pdf
    • https://cdn.shopify.com/s/files/1/0434/2333/4567/files/bittorrent_stuck_on_connecting_to_peers.pdf
    • https://cdn.shopify.com/s/files/1/0431/3248/5793/files/24954808532.pdf
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/wegetofapuvoxatow.pdf
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/65828180906.pdf
    • https://cdn.shopify.com/s/files/1/0429/2712/8735/files/jakokitipezik.pdf
    • https://cdn.shopify.com/s/files/1/0431/2888/1313/files/tugebi.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_off000077fb.bin
6cd7f4bf3d16acfa611bbf047e8ee1b04d23b997296693a751469fb0b29ba6fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x77FB 5764 bytes
font_01_sfnt_off00008b81.bin
b79c253b3cf904f92048fc65478eaa800f97a5e040a1eb9960b2d0f741dd4a42
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B81 11016 bytes