Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa401e401d821e31…

MALICIOUS

PDF

45.6 KB Created: 2020-08-24 06:09:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e0d4d3eedce4edd5afeb436fc1bc0dd SHA-1: 1ea3b08fa68b2e1c5c57ff257bf0ff01f2799f2d SHA-256: aa401e401d821e31dc61e7c9d781dbd084fb07ee09dbee102f0514236d5fc1e4
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though heavily corrupted, contains the same malicious URL and a benign-looking title, suggesting a lure. The primary malicious URL is likely used to redirect users to a phishing site or to download further malware.

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=free+colouring+sheets+for+christmas
    • http://gonapinu.leadingedgeequine.com/uploads/1/3/2/6/132680835/9241252.pdf
    • https://cdn.shopify.com/s/files/1/0434/0462/4021/files/great_is_thy_faithfulness_piano_solo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1827/2417/files/96231001404.pdf
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/51802459722.pdf
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/mewuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/2442/4853/files/67147550519.pdf
    • https://cdn.shopify.com/s/files/1/0448/4435/1649/files/zagevajebuminafejodewivij.pdf
    • https://cdn.shopify.com/s/files/1/0435/8271/8107/files/bepuseweb.pdf
    • https://cdn.shopify.com/s/files/1/0428/8138/4604/files/50799764536.pdf
    • https://cdn.shopify.com/s/files/1/0437/6189/3534/files/kenyan_passport_application_form_online_in_kenya.pdf
    • https://cdn.shopify.com/s/files/1/0439/4477/1739/files/critical_path_method_example_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/febenewanulotefexiva.pdf
    • https://cdn.shopify.com/s/files/1/0432/8456/2084/files/writing_chemical_formulas_and_naming_compounds.pdf
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/zodavabiluja.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_off000075e9.bin
c3920207cf28da53890644420f6d6cfc2ea2f7662e8fe714236a0db6b313ad5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E9 5248 bytes
font_01_sfnt_off00008792.bin
e015d6ec468403b024e41c5860633ef58215c323b70e9378d9127d710a0110a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8792 9948 bytes

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