Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a82310ad53333d0…

MALICIOUS

PDF

42.3 KB Created: 2020-08-16 12:16:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b7108d59303d68c55a54c6fbf4e3fc1 SHA-1: f2a56be746621a34840a34b5d28020ce49e061eb SHA-256: 8a82310ad53333d0f18ef17ec260e36c17a8f9cb5b4212bebb7afb0b64dbd1f8
120 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=answer+of+happy+birthday+wishes'. This URL is presented within the document body, disguised as birthday wishes, to entice users into clicking it. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious IOC is the ttraff.com redirector.

Heuristics 3

  • 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.
  • 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=answer+of+happy+birthday+wishes
    • http://fuzuf.lorrainechandler.com/uploads/1/3/1/0/131070450/6592731.pdf
    • http://files.operationgringo.com/uploads/1/3/1/4/131483138/gubudonawu.pdf
    • http://files.tarahanish.com/uploads/1/3/0/9/130969389/8261250.pdf
    • http://puzin.eaglendt.services/uploads/1/3/0/8/130873853/111f846.pdf
    • http://files.asteme.com/uploads/1/3/1/1/131164081/59725.pdf
    • https://cdn.shopify.com/s/files/1/0433/8538/9221/files/wofek.pdf
    • https://cdn.shopify.com/s/files/1/0437/8948/4190/files/takiteginipajunemafoseku.pdf
    • https://cdn.shopify.com/s/files/1/0438/3863/6192/files/bartram_trail_map.pdf
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/95667014409.pdf
    • https://cdn.shopify.com/s/files/1/0430/6403/3429/files/suseregubenepub.pdf
    • https://cdn.shopify.com/s/files/1/0444/6637/2775/files/math_worksheets_grade_7.pdf
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/harry_potter_book_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6586/files/zuxug.pdf
    • https://cdn.shopify.com/s/files/1/0428/4894/4284/files/wakese.pdf
    • https://cdn.shopify.com/s/files/1/0434/3765/4178/files/47493115221.pdf
    • https://cdn.shopify.com/s/files/1/0436/7443/5737/files/adolescent_autism_spectrum_quotient.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_off0000677b.bin
1376c1032bf998647c6dc63e69ecbfee178973dfc66149386775c736a45f3656		 pdf-font-stream PDF embedded font (sfnt) at offset 0x677B 5420 bytes
font_01_sfnt_off000079ec.bin
74f2ebfa87527c4755e4e7d729011d068fb37dd6a31af14ed257072cbbd49e46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79EC 10088 bytes

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