Malicious PDF — malware analysis report

Static analysis result for SHA-256 532cc74aff8a7f03…

MALICIOUS

PDF

41.8 KB Created: 2020-08-26 17:03:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 084084083d17dc23796718195e6e705d SHA-1: 45337f24dfd8a6fbbcdb39989d4073cde12ae941 SHA-256: 532cc74aff8a7f0325999b17b4f2dc90a1c933224f6e820bd68f07aed0d4fee9
152 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 'https://ttraff.cc/pify?keyword=sisters+of+battle+porn'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. The primary intent appears to be redirecting the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=sisters+of+battle+porn
    • http://zibizu.us-arabchamber.org/uploads/1/3/0/9/130969332/fakazobow_dizufevowe_zadofazeterumuk.pdf
    • https://cdn.shop
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/kebojerugetolezigafubov.pdf
    • https://cdn.shopify.com/s/files/1/0437/4603/3818/files/46473193509.pdf
    • https://cdn.shopify.com/s/files/1/0435/3287/7976/files/43996463988.pdf
    • https://cdn.shopify.com/s/files/1/0432/4311/0555/files/minikipezejazabekenexowo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0887/4906/files/3166743458.pdf
    • https://cdn.shopify.com/s/files/1/0454/1127/0824/files/adobe_acrobat_reader_windows_xp_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/1137/5267/files/13725559638.pdf
    • https://cdn.shopify.com/s/files/1/0462/8486/5696/files/photo_studio_background_psd_file_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/1480/7974/files/57036971338.pdf
    • https://cdn.shopify.com/s/files/1/0429/2041/1289/files/panasonic_fan_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0435/7750/7999/files/luratu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1111/2092/files/tixeponezas.pdf
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/90983533081.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_off00005a72.bin
c5b19b627a5f8800b5564470d37f872939a5bcfa9a3705a78bd13c7ac6a012a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A72 4924 bytes
font_01_sfnt_off00006b22.bin
c8970c9482932f29ec982460be24ddf11668c7894533c6dede055cf305ceeb79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B22 9612 bytes
font_02_sfnt_off00008bf5.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF5 4324 bytes

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