Malicious PDF — malware analysis report

Static analysis result for SHA-256 b81e484529ae2760…

MALICIOUS

PDF

42.7 KB Created: 2020-08-22 12:21:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fea1cc993a3b27ae25cf725a6d9e709f SHA-1: fa594fb290a8f89cbfaf53bd66678129f3ff8b2b SHA-256: b81e484529ae2760d6fedc7a823001fb1380956b97c52fd3ac3454b20c22c0cb
180 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a lure for free ringtones, which points to the ttraff.com domain. It also exhibits characteristics of a link farm, embedding numerous links to other PDFs, potentially for SEO poisoning or to host further malicious content. The presence of a password archive lure and a callback phishing lure suggests a multi-stage attack designed to deceive the user into downloading further payloads or engaging with a scam.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=ringtones+for+iphone+6+plus+free
    • http://nekixax.keepinghopealivemissions.com/uploads/1/3/1/3/131379732/9314241.pdf
    • http://files.ucitownandgown.com/uploads/1/3/0/8/130813400/zadazasako_wesesop.pdf
    • http://jugutak.noidurham.org/uploads/1/3/1/4/131437145/kivulif-lojole-bunowerotopo-kadusadosimobiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/5112/2842/files/5298808346.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/32570795987.pdf
    • https://cdn.shopify.com/s/files/1/0431/8098/2438/files/debit_memo_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0439/1898/3323/files/16945362872.pdf
    • https://cdn.shopify.com/s/files/1/0433/3977/6159/files/wirisokinud.pdf
    • https://cdn.shopify.com/s/files/1/0431/5319/5165/files/all_i_do_is_win_clean.pdf
    • https://cdn.shopify.com/s/files/1/0434/5511/9513/files/87156860338.pdf
    • https://cdn.shopify.com/s/files/1/0434/0462/4021/files/pizuxefum.pdf
    • https://cdn.shopify.com/s/files/1/0432/4281/5643/files/70377868985.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/13594558523.pdf
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/46625865764.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_off00006950.bin
d8c4cff2b8e0540eb9406925f575fac479afcdecc4f68c683c17e64a3d914d2e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6950 5116 bytes
font_01_sfnt_off00007ab9.bin
8d87a4bbe9d8032444654a2958df80d345d4e0d9e44bb17b1cef076302430cf2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB9 10272 bytes