Malicious PDF — malware analysis report

Static analysis result for SHA-256 e603c30568c9ec30…

MALICIOUS

PDF

42.5 KB Created: 2020-08-06 20:42:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9df1e0c96989ff44098f0e4d0e3a6494 SHA-1: 3151511521cd799c31253a267d6ec7887ce84814 SHA-256: e603c30568c9ec30ae797a0a8ef4a0023ea639d0146164c699432a319e316f2c
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm infrastructure. One critical heuristic identified a redirector link to 'ttraff.com', which is known malicious. The document body appears to be obfuscated or corrupted, but the presence of the URL suggests a lure related to 'type 1 diabetes mellitus'. The primary attack pattern involves redirecting users through a chain of links, likely to a phishing site or to download further malware.

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=type+1+diabetes+mellitus+pdf
    • http://files.royglobalized.org/uploads/1/3/1/0/131070722/3304281.pdf
    • http://files.english808.com/uploads/1/3/0/8/130814531/95ffc7d1a2c290.pdf
    • http://files.chelseadianephotography.com/uploads/1/3/0/9/130969403/de51a855005.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ropuxikasafomudixaxo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/44497736696.pdf
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/juxitedorurag.pdf
    • https://cdn.shopify.com/s/files/1/0431/4837/8266/files/24373574613.pdf
    • https://cdn.shopify.com/s/files/1/0430/4722/3458/files/43383588715.pdf
    • https://cdn.shopify.com/s/files/1/0437/3292/6616/files/how_to_save_in_gta_5.pdf
    • https://cdn.shopify.com/s/files/1/0432/8570/8953/files/voririsomikidak.pdf
    • https://cdn.shopify.com/s/files/1/0432/3134/6856/files/honda_company_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/6727/7469/files/14501224240.pdf
    • https://cdn.shopify.com/s/files/1/0427/7141/5196/files/labokivobuwisuluf.pdf
    • https://cdn.shopify.com/s/files/1/0440/7807/1960/files/nurotovujixebege.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_off0000696a.bin
2f0c11fe62637f13dac5ae7dc7273f0607817ebc4a84eb54e97a8b918f50884f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x696A 5336 bytes
font_01_sfnt_off00007b8b.bin
3badfc77f8a8e9cfb64f038065d58c0c9f81135ec88a966cd9097ba92b28955c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8B 9804 bytes

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