Malicious PDF — malware analysis report

Static analysis result for SHA-256 a393cd6d0eb0417d…

MALICIOUS

PDF

33.4 KB Created: 2020-08-20 20:51:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4af4fbdf93b68bbaed7be218f03abab0 SHA-1: 10cad918daedd27043c36e58eab35ab7b916ffde SHA-256: a393cd6d0eb0417d75e5085a8d15d5acd5c05d0ffe7761a06f6b0bc98047599c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it is a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and a search query related to 'Mr. Bean videos in tamil free', suggesting a lure to entice users to click the malicious link. The file also exhibits characteristics of a link farm, embedding numerous other PDF links, many hosted on Shopify, which may serve to obscure the primary malicious intent or distribute further malicious content.

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=mr.+bean+videos+in+tamil+free
    • http://files.awkwardsilencejax.com/uploads/1/3/0/7/130775828/6884040.pdf
    • https://cdn.shopify.com/s/files/1/0445/7355/6900/files/alexia_clark_diet.pdf
    • https://cdn.shopify.com/s/files/1/0434/3024/8600/files/irrigation_engineering_multiple_choice_questions.pdf
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/best_way_to_speak_english_fluently.pdf
    • https://cdn.shopify.com/s/files/1/0431/4788/6743/files/simple_appointment_letter_format.pdf
    • https://cdn.shopify.com/s/files/1/0438/0445/9168/files/kannada_love_feeling_audio_songs.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3294478915.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/rozazirapusisagigevomev.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/12496905645.pdf
    • https://cdn.shopify.com/s/files/1/0435/9897/1038/files/33645328246.pdf
    • https://cdn.shopify.com/s/files/1/0435/9494/0575/files/bankers_adda_gk_capsule_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/5330/0377/files/74792302889.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_off0000452a.bin
fe14cc04c46d95d7bb41650680101087a59002d9ca5079ddda4a514d17a12ca4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x452A 5292 bytes
font_01_sfnt_off00005718.bin
4f752bddf236399e42f11bb5b5a8e96960efcb70fdf541aae19225bf7b2e2ff3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5718 9936 bytes

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