Malicious PDF — malware analysis report

Static analysis result for SHA-256 a462d0b44c9ef599…

MALICIOUS

PDF

48.7 KB Created: 2020-08-24 04:41:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81efd36578a401a47918861684b78c88 SHA-1: 1e9c131df15289f9d7c6af7267990f5af879c9f9 SHA-256: a462d0b44c9ef599b01608d6c608a78f67c681709f5b6481f673f9fe80613add
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body text, though heavily obfuscated, contains keywords related to 'volcanoes' and 'news', suggesting a lure to entice users to click on the malicious link. The primary malicious URL identified is https://ttraff.com/pify?keyword=volcanoes+earth+shattering+news+reading+passage+answer, which is flagged as a known malicious redirector. Several other unknown URLs were also extracted.

Heuristics 3

  • 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.
  • 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=volcanoes+earth+shattering+news+reading+passage+answer
    • http://telij.hyuckchung.com/uploads/1/3/2/7/132740449/14f6762e3065a.pdf
    • http://dawuwoju.cyclingforsight.org/uploads/1/3/1/4/131438474/kigixij_minuzobe_kupodope_wegivebirudul.pdf
    • https://cdn.shopify.com/s/files/1/0435/2465/3224/files/37918539437.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/14024872601.pdf
    • https://cdn.shopify.com/s/files/1/0437/6592/3992/files/film_innocent_witness_drakorindo.pdf
    • https://cdn.shopify.com/s/files/1/0438/0642/5249/files/73527077131.pdf
    • https://cdn.shopify.com/s/files/1/0430/0718/0954/files/vevapup.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4432/files/6071451711.pdf
    • https://cdn.shopify.com/s/files/1/0434/1160/3612/files/ceo_andhra_e_registration_form_6.pdf
    • https://cdn.shopify.com/s/files/1/0431/9415/5169/files/rajabuzimim.pdf
    • https://cdn.shopify.com/s/files/1/0432/8256/3232/files/black_law_dictionary_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3490/1671/files/benoni_defense.pdf
    • https://cdn.shopify.com/s/files/1/0432/4265/1805/files/12077245920.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_off00006632.bin
0c6effaed35e1fdc3b4c6b27311e4f81ca426e7fce2bbe4522075f34e1c06fd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6632 7008 bytes
font_01_sfnt_off00007dfc.bin
565660cfadcb87a904e9e656fe93ee57f91743c8d27da67ab85b279ec30fd572		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFC 5392 bytes
font_02_sfnt_off00009056.bin
a82ffc456c63508d97b567218f227fb636eb87cec52f621783d29f93f23d8175		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9056 10252 bytes

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