Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9699abb10b9583c…

MALICIOUS

PDF

43.5 KB Created: 2020-08-22 13:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d6fe6a5dead959c970f0276e8e966e7 SHA-1: 430efc4d8319f9d1b5eaf999ffbd62ff2b5bcb0c SHA-256: d9699abb10b9583c2a621095a0f98566392b08e8920283a203424f2e0f626541
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This URL is presented to the user as a download for a dictionary app. The PDF also contains a large number of embedded links, many of which point to benign Shopify URLs, but the presence of the malicious redirector indicates a phishing or scam attempt. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=u+dictionary+app++english+to+bengali
    • http://files.jq-photography.com/uploads/1/3/1/3/131380915/nagudunoker.pdf
    • http://files.physiotherapyassociates.co.uk/uploads/1/3/1/4/131452904/xutegujetigutonijiv.pdf
    • http://lojanavub.rigonibakery.com/uploads/1/3/0/9/130969742/1417292.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5702/files/communication_networks_leon_garcia_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0446/9293/0716/files/6th_grade_vocabulary_test.pdf
    • https://cdn.shopify.com/s/files/1/0434/0885/1098/files/2281917652.pdf
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/buforexunagasojur.pdf
    • https://cdn.shopify.com/s/files/1/0431/6489/3345/files/telugu_panchatantra_kathalu_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/4245/6231/files/mime_type_csv.pdf
    • https://cdn.shopify.com/s/files/1/0435/1816/5146/files/fool_on_the_hill_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/7618/1404/files/fijelu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8802/7543/files/fikunojat.pdf
    • https://cdn.shopify.com/s/files/1/0440/4248/5910/files/diseases_related_to_carbohydrate_metabolism.pdf
    • https://cdn.shopify.com/s/files/1/0438/4204/4066/files/top_social_media_platforms_in_brazil.pdf
    • https://cdn.shopify.com/s/files/1/0432/4897/6027/files/basics_of_cooking.pdf
    • https://cdn.shopify.com/s/files/1/0428/2092/7655/files/58741166146.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_off000056fc.bin
d1930cd82414f3d3350813a69bdcb10cb1987f91700e0932671c2902472aeef3
pdf-font-stream PDF embedded font (sfnt) at offset 0x56FC 5356 bytes
font_01_sfnt_off00006919.bin
a80c989ca8599ae8dc1f228ec1fa2eb701ed6acac43bf45893b09e179657fe40
pdf-font-stream PDF embedded font (sfnt) at offset 0x6919 13444 bytes
font_02_sfnt_off00009303.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9303 4324 bytes