Malicious PDF — malware analysis report

Static analysis result for SHA-256 45b9e9f34cc008b4…

MALICIOUS

PDF

75.8 KB Created: 2020-08-10 11:18:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d5eec211c774e056c2b4673738a7a02 SHA-1: 943909f5c48e5065cfafb60b32436336e85ce0af SHA-256: 45b9e9f34cc008b4eb258d9d21954839efb7f3a4ddc53033a355f6d427b90503
140 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it features a link farm of numerous PDFs hosted on Shopify, with one specific link identified as a potential lure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=aha+guideline+stemi+2020+pdf', reinforcing the malicious redirector finding. The presence of a callback lure heuristic suggests a potential phishing or tech-support scam pretext.

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.cc/pify?keyword=aha+guideline+stemi+2020+pdf
    • http://jusinola.merakidesignagency.com/uploads/1/3/0/8/130873826/vuwenejivedire-xuzam-jofikuxadojap-firofizofek.pdf
    • http://files.futurizeyourself.com/uploads/1/3/1/3/131381363/143601.pdf
    • http://files.poorginny.com/uploads/1/3/0/7/130740385/ribox.pdf
    • http://files.naturallytamar.com/uploads/1/3/1/4/131407547/6426862.pdf
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/42492470561.pdf
    • https://cdn.shopify.com/s/files/1/0431/0492/7905/files/core_java_books_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zurutadodusabexefiba.pdf
    • https://cdn.shopify.com/s/files/1/0432/7361/7568/files/gates.pdf
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/best_free_guitar_vst.pdf
    • https://cdn.shopify.com/s/files/1/0432/0008/6180/files/56807312753.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/orcs_and_goblins_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/schizophrenia_journal_articles.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6586/files/22525736466.pdf
    • https://cdn.shopify.com/s/files/1/0428/3305/1814/files/dutogedowejasovudude.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_off0000e85e.bin
284a430cc199e84a592f020560c97b1c9e56d1c6369d946c49b370bc3151fb48
pdf-font-stream PDF embedded font (sfnt) at offset 0xE85E 5620 bytes
font_01_sfnt_off0000fb5f.bin
0cbb3f3960ff2085b228645c597569a1abbf06a6f87b2c56cf3caadc6e663c9d
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5F 11832 bytes