Malicious PDF — malware analysis report

Static analysis result for SHA-256 33d88fa85a0dc0d0…

MALICIOUS

PDF

47.1 KB Created: 2020-08-17 16:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e16b26311640efa0a1582a27c1079efd SHA-1: 0f5882c68652511e96f75d8d0d55897e8d1d0533 SHA-256: 33d88fa85a0dc0d0c3608d7be366b143cf469f499fab92ee5a8ffb4e89cc3de7
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm, with many links hosted on Shopify, but some pointing to potentially malicious domains. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a download button lure further supports a malicious intent, likely to redirect users to a phishing site or initiate a malware download.

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=arabic+to+bangla+dictionary+app
    • http://nasex.zepedamillan.com/uploads/1/3/1/8/131856706/a6cc172ad7dee.pdf
    • http://kovas.streetchurchministries.org/uploads/1/3/0/7/130775519/a049fd28.pdf
    • http://kesuv.missionariesinfrance.com/uploads/1/3/1/0/131071157/demiturafepixatinag.pdf
    • https://cdn.shopify.com/s/files/1/0431/3461/5706/files/template_angular_5_bootstrap_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/7461/6473/files/vonekakukekofawimekunix.pdf
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/290167693.pdf
    • https://cdn.shopify.com/s/files/1/0429/3489/4755/files/ambledown_gap_claim_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/zilojitukilejipov.pdf
    • https://cdn.shopify.com/s/files/1/0430/9922/6279/files/pupemumamiwofuzin.pdf
    • https://cdn.shopify.com/s/files/1/0434/3404/9703/files/18937749178.pdf
    • https://cdn.shopify.com/s/files/1/0434/7792/6040/files/86225498696.pdf
    • https://cdn.shopify.com/s/files/1/0433/9525/2374/files/ariens_compact_24_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/nutafusaligiv.pdf
    • https://cdn.shopify.com/s/files/1/0439/8009/5646/files/90393970223.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_off000054f5.bin
a5d77baf08195c710ac8be5dc4a0ef6b3d092c726724d992add6471c6e728d05
pdf-font-stream PDF embedded font (sfnt) at offset 0x54F5 5292 bytes
font_01_sfnt_off000066fc.bin
74acacadf12471b339ef9b618e19398d1f064f83e073a4f68df8f5b4dd103d1c
pdf-font-stream PDF embedded font (sfnt) at offset 0x66FC 9744 bytes
font_02_sfnt_off00008887.bin
a72b195be002f7cef82c246f81d1233ad29703af951098db178a954d0c2be253
pdf-font-stream PDF embedded font (sfnt) at offset 0x8887 22220 bytes