Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc4dfd838d5c06e…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 22:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9deefd88704674aba8ba9589137ab328 SHA-1: 02ac5135d6da31a8895e6b470955ebced518d2c7 SHA-256: 9cc4dfd838d5c06ea2612c2bd8ce793c476612a26d4e875f9fbaba3a8d977c48
150 Risk Score

Malware Insights

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

The PDF contains a clear lure for free CSGO skins, directing users to a malicious redirector at 'https://ttraff.cc/pify'. The document body, though heavily obfuscated, contains this URL and other embedded links, indicating a phishing or scam attempt. The presence of a PDF link farm heuristic further supports the malicious intent of distributing links.

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.cc/pify?keyword=csgo+free++with+skins
    • http://pizuziz.ffm-law.com/uploads/1/3/1/4/131407089/c00e50c4c251.pdf
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/91506791013.pdf
    • https://cdn.shopify.com/s/files/1/0436/1984/4258/files/formato_certificado_de_origen_usa_dian.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0319/files/wawemez.pdf
    • https://cdn.shopify.com/s/files/1/0443/0426/9468/files/ayatoul_koursiyou_phonetique.pdf
    • https://cdn.shopify.com/s/files/1/0433/6920/1832/files/estimator_job_description_template.pdf
    • https://cdn.shopify.com/s/files/1/0448/0414/5309/files/honeywell_access_control_system_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78539107281.pdf
    • https://cdn.shopify.com/s/files/1/0436/3337/7440/files/xusinigoraki.pdf
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/multi_channel_data_acquisition_system.pdf
    • https://cdn.shopify.com/s/files/1/0440/8626/3960/files/fezazunegafiveluxenuza.pdf
    • https://cdn.shopify.com/s/files/1/0437/7326/4030/files/bmw_x6_2020_brochure.pdf
    • https://cdn.shopify.com/s/files/1/0434/8103/9013/files/bexezovate.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_off00005828.bin
5c88a06d3f2654367bdd6cbf8ebcfa6241ccedda54c696e310cee7daa490b34c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5828 4752 bytes
font_01_sfnt_off0000685f.bin
89e92a75cab9033bef565502e07ced37a4a64a60f47b9ed9dc8886038fc27f4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x685F 10772 bytes
font_02_sfnt_off00008d30.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D30 4324 bytes

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