Malicious PDF — malware analysis report

Static analysis result for SHA-256 a797a5e568612ee2…

MALICIOUS

PDF

62.3 KB Created: 2020-08-20 13:43:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 38b65cb2fdb05d65152ad4fb6170f764 SHA-1: a8d81f98f02d02cd3d7a140fca396173257d8810 SHA-256: a797a5e568612ee22814c2e2c4bfcff4b4ceaaa9172da7cb9065f04aa087e8f9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=barcode+reader+api+android'. Additionally, it exhibits a PDF SEO link farm pattern, with numerous links hosted on cdn.shopify.com, including 'https://cdn.shopify.com/s/files/1/0430/1396/3939/files/depebubajegivufu.pdf'. The document also contains a lure to execute commands in a shell context, suggesting an attempt to trick the user into running malicious code.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=barcode+reader+api+android
    • http://files.vicarioustyle.com/uploads/1/3/1/6/131606343/57debe840238a.pdf
    • https://cdn.shopify.com/s/files/1/0430/1396/3939/files/depebubajegivufu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/gmod_apk_aptoide.pdf
    • https://cdn.shopify.com/s/files/1/0431/4519/9777/files/41233552807.pdf
    • https://cdn.shopify.com/s/files/1/0431/2426/1026/files/8549061465.pdf
    • https://cdn.shopify.com/s/files/1/0430/5856/1173/files/23459736100.pdf
    • https://cdn.shopify.com/s/files/1/0433/5907/6510/files/weather_report_shimla_nankhari.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/australian_formal_dress_websites.pdf
    • https://cdn.shopify.com/s/files/1/0429/1146/5638/files/alimentao_saudavel_para_ces.pdf
    • https://cdn.shopify.com/s/files/1/0440/7784/2584/files/cbse_class_10_board_exam_2019_datesheet.pdf
    • https://cdn.shopify.com/s/files/1/0427/5719/3895/files/71865332158.pdf
    • https://cdn.shopify.com/s/files/1/0434/0183/8757/files/hedonism_philosophy.pdf
    • https://cdn.shopify.com/s/files/1/0435/5493/0839/files/a_day_without_rain_enya_album.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_off0000a821.bin
f945bb1daafa611b01420eac3c100490f238c550df44513f0355195b4fa864fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA821 4904 bytes
font_01_sfnt_off0000b8d7.bin
628d6eeb2d3abc8ffef43d1089fb958221ecc40aba1480c2fabc2620fce0f08c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB8D7 16884 bytes

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