Malicious PDF — malware analysis report

Static analysis result for SHA-256 f97e67da5d87c121…

MALICIOUS

PDF

46.7 KB Created: 2020-08-23 04:20:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c33c126bc88e99868b1b8f5a73062b31 SHA-1: 275e4e7c3312cea2222026fcce1c86b1e40a9e29 SHA-256: f97e67da5d87c121ccefb7f5cd26d139aa1bdaa826deb00e6343213423433266
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is designed to lure users with a 'free personal expense spreadsheet' keyword. The document also functions as a link farm, with numerous embedded links, many of which point to Shopify domains. One critical heuristic indicates the PDF links to known malicious redirector infrastructure. The presence of a 'download button' heuristic further supports the lure-based attack pattern. 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.com/pify?keyword=free+personal+expense+spreadsheet
    • http://files.theacceptedlife.com/uploads/1/3/1/1/131164556/56a80a255273a9e.pdf
    • http://files.clydeaspevig.com/uploads/1/3/1/8/131872285/aae943a5.pdf
    • http://files.melissabergstrom.com/uploads/1/3/0/7/130740211/6261314.pdf
    • https://cdn.shopify.com/s/files/1/0431/7151/2480/files/jeloseduduvekatapukisoxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9841/files/sail_maui_performance_sailing_charters.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/38682582855.pdf
    • https://cdn.shopify.com/s/files/1/0436/4982/6969/files/47510360025.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/kitevadigiju.pdf
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/dijulibinilasiworonibe.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/fiselewimunanofapesone.pdf
    • https://cdn.shopify.com/s/files/1/0434/1104/6561/files/pumimabidojosijoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/3313/3209/files/request_for_leave_letter_format.pdf
    • https://cdn.shopify.com/s/files/1/0428/8361/2831/files/audio_converter_windows_xp_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/catcalling_definition.pdf
    • https://cdn.shopify.com/s/files/1/0436/7941/6473/files/tavavinebizubiwozinid.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3701/files/cuneiform_writing.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_off0000626e.bin
0fff95eb81c7943681628b1499d68c497f905b8f2566597bdf837d7d22770cd5
pdf-font-stream PDF embedded font (sfnt) at offset 0x626E 5072 bytes
font_01_sfnt_off0000739d.bin
99d8e43752952fda81ddf83a81a2365f3b4c3ce7c67f0334b9b076d90678a1e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x739D 10572 bytes
font_02_sfnt_off000097fe.bin
028dbaa76d48ae99b02248bacea50134e27ed131f5dd39e25ac401de8961e19b
pdf-font-stream PDF embedded font (sfnt) at offset 0x97FE 16312 bytes