Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bb62f34c02d8464…

MALICIOUS

PDF

44.7 KB Created: 2020-08-17 06:20:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c01bced7f5a66603d5308ee68a514876 SHA-1: 6ed4f3cee6721f15d221e0066c831b94d7de8c15 SHA-256: 3bb62f34c02d8464d57d90bb5864abae41777d330d7e5699ca4e164e3877ccac
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily corrupted, contains the same URL found in the heuristic, suggesting a lure for users to click on the malicious link. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=light+brown+color+formal+shoes
    • http://files.sandstonecontracting.com/uploads/1/3/1/4/131413678/lasinotofanevuk-sikozuwa-dupodokurid.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/rugumosuvanoxonusabimikil.pdf
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/schopenhauer_the_art_of_always_being_right.pdf
    • https://cdn.shopify.com/s/files/1/0431/8098/2438/files/words_list_for_spelling_bee_competition.pdf
    • https://cdn.shopify.com/s/files/1/0434/0449/2957/files/arithmetic_by_rakesh_yadav.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xovigaza.pdf
    • https://cdn.shopify.com/s/files/1/0437/3990/6197/files/designing_the_brand_identity_in_retail_spaces.pdf
    • https://cdn.shopify.com/s/files/1/0432/0935/9517/files/vavuziwirafomut.pdf
    • https://cdn.shopify.com/s/files/1/0437/9099/1521/files/illustrated_chinese_english_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0435/5702/8001/files/lightning_thief_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/1047/3633/files/1950141811.pdf
    • https://cdn.shopify.com/s/files/1/0431/5312/9629/files/serverless_typescript_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/lexus_is300_manual_swap.pdf
    • https://cdn.shopify.com/s/files/1/0430/8221/9674/files/pizobidepolex.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_off000070a9.bin
b6bbf6178915998dcaec7e2af95aa1938e29f64e822032b75bb2098bd4a3ce38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70A9 5468 bytes
font_01_sfnt_off00008331.bin
c4104cdd0fc184e3c73cf180d1c2ecdb9d81514e552709077397c680038d2ede		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8331 10264 bytes

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