Malicious PDF — malware analysis report

Static analysis result for SHA-256 27ac1eb0af70f1c4…

MALICIOUS

PDF

64.2 KB Created: 2020-08-29 23:49:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82ea5e958287bdb3ccbe7878535b2f7a SHA-1: 4556ec5510cadb37c5ddec93123fd1472571de3b SHA-256: 27ac1eb0af70f1c425e9dc81a4c713cbd9739947ad5e277270f87ac985d6fbf0
140 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=brandy+talore+porn'. Additionally, it exhibits characteristics of a link farm, with numerous embedded links to PDF files. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. The presence of a callback phishing lure heuristic further suggests a social engineering 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.
  • 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.ru/wix?keyword=brandy+talore+porn
    • https://cdn.shopify.com/s/files/1/0437/2889/6161/files/7745763832.pdf
    • https://cdn.shopify.com/s/files/1/0429/8945/3473/files/28098056740.pdf
    • https://cdn.shopify.com/s/files/1/0428/8171/2287/files/gofukoketowegevenijigafu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5322/7932/files/89545383384.pdf
    • https://cdn.shopify.com/s/files/1/0434/6285/2761/files/xukowela.pdf
    • https://cdn.shopify.com/s/files/1/0440/4514/0118/files/ansys_spaceclaim_direct_modeler_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/74008925008.pdf
    • https://cdn.shopify.com/s/files/1/0431/7659/1509/files/44367633108.pdf
    • https://cdn.shopify.com/s/files/1/0435/6331/9445/files/gopojalevu.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/at_t_refurbished_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/pelovanojunavenujopi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3146/8951/files/bottle_capping_machine.pdf
    • https://cdn.shopify.com/s/files/1/0436/6794/7673/files/negexujikun.pdf
    • https://cdn.shopify.com/s/files/1/0437/6372/8545/files/51400915161.pdf
    • https://cdn.shopify.com/s/files/1/0432/8144/9124/files/bioreaction_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0432/7656/6684/files/cahier_des_charges_en_anglais.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_off0000ad88.bin
05c3dcf0604275b05cc9aa40a84e92933271865592bc32f522e79d9431157462
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD88 4928 bytes
font_01_sfnt_off0000be5b.bin
d548e7a3cd20148709aef2162a652aec02b18c32b463f59c4913e9fbcc886e9e
pdf-font-stream PDF embedded font (sfnt) at offset 0xBE5B 16900 bytes