Malicious PDF — malware analysis report

Static analysis result for SHA-256 dca88524d5a681cc…

MALICIOUS

PDF

42.1 KB Created: 2020-08-22 08:20:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adcc2582bbe7725255902f30eecf303e SHA-1: 7ac98f181b842e7d66df60079abcfd5dc09eca96 SHA-256: dca88524d5a681cce469f395f1d59a83387494e352cb0f46dc6d24569f45872f
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=netflix+series+en+op+pc', which is designed to lure users to malicious infrastructure. The document also exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains hosting other PDFs. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the redirector and the link farm strongly suggest a phishing or scam attempt.

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=netflix+series+en+op+pc
    • http://files.piscatawaydojo.org/uploads/1/3/0/7/130740385/solesevufago.pdf
    • http://fagato.rajaampatdivers.com/uploads/1/3/1/6/131637316/05e5993f672c1.pdf
    • http://files.riversidechapelforbes.org/uploads/1/3/2/7/132712093/gudekirabikato.pdf
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/nimadone.pdf
    • https://cdn.shopify.com/s/files/1/0432/1456/9640/files/midanegodane.pdf
    • https://cdn.shopify.com/s/files/1/0439/1282/2939/files/surface_area_and_volume_of_solid_figures.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/kinukaziv.pdf
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/59983224108.pdf
    • https://cdn.shopify.com/s/files/1/0440/5143/1574/files/boridiwixoketetafexin.pdf
    • https://cdn.shopify.com/s/files/1/0437/9649/6544/files/job_interview_vocabulary_words.pdf
    • https://cdn.shopify.com/s/files/1/0431/3710/6087/files/yelp_review_email_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/3887/4532/files/curtis_air_compressor_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/order_acknowledgement_template.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_off00006933.bin
ff23cbee2a036e5a6937205da11fb125c6d693e86de0691f849686ea3770ad70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6933 4836 bytes
font_01_sfnt_off000079c5.bin
587c439f0f66275d828b64b92d065c54a4d4a814e0b0db4e5c69cad7834674b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79C5 10088 bytes

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