Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1487bce5811ae10…

MALICIOUS

PDF

61.5 KB Created: 2020-08-19 11:58:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aaf8b6a0c0117fd4e2ca4761653cc3c9 SHA-1: da53388799f1a4d5136fd100447c293a383c92a6 SHA-256: c1487bce5811ae10e5739f7d446df6f81ea95e7009a0ac4b19876cd63a882e8e
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a 'download button' heuristic further suggests a lure to click the malicious link.

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.com/pify?keyword=teboho+moloi+atamelang+ho+jehova
    • http://files.heightsafesolutions.com.au/uploads/1/3/1/8/131856430/rusoju-misipi-pomivi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/49467104278.pdf
    • https://cdn.shopify.com/s/files/1/0428/8577/5519/files/rivud.pdf
    • https://cdn.shopify.com/s/files/1/0439/3123/8568/files/5427114890.pdf
    • https://cdn.shopify.com/s/files/1/0445/2545/3471/files/agricola_board_game_rules.pdf
    • https://cdn.shopify.com/s/files/1/0436/9973/2634/files/nubitesifofisetikiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/46616749522.pdf
    • https://cdn.shopify.com/s/files/1/0447/1305/0265/files/genetically_modified_crops_and_food_security.pdf
    • https://cdn.shopify.com/s/files/1/0432/0333/0209/files/deperujixela.pdf
    • https://cdn.shopify.com/s/files/1/0438/3680/1181/files/97690930324.pdf
    • https://cdn.shopify.com/s/files/1/0438/4640/2208/files/dragon_city_breeding_guide_2018.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077c3.bin
b7d5335972d900f246f9b66d5246370e3771d40ed32af4e598153da6b0418a7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x77C3 3904 bytes
font_01_sfnt_off00008594.bin
bb546dd8f0830737c795d67ceaea7085aa7b0d460770d55c51528303e0609d1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8594 5052 bytes
font_02_sfnt_off000096ab.bin
a7968f6c57cb55ee4883522c17f55ada3533029cbeb53bdb4c0f7a96c427b09a
pdf-font-stream PDF embedded font (sfnt) at offset 0x96AB 6800 bytes
font_03_sfnt_off0000aa92.bin
874dd66d13a8355429a65bdd80e96249a49412400b0c53643604485ce1867d8d
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA92 7268 bytes
font_04_sfnt_off0000c07a.bin
7373979fa1f04b5e83d5660e822faccf85aa2f7e570572933e07612affbae935
pdf-font-stream PDF embedded font (sfnt) at offset 0xC07A 12196 bytes