Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b68d5d6c82c86ce…

MALICIOUS

PDF

53.7 KB Created: 2020-07-28 22:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ee5f039c0f100f05d9ef2307f978bc6 SHA-1: ff73c1a1f45661020dc82b20134b6d9259c4e523 SHA-256: 4b68d5d6c82c86ce20773a014d38a1c99cbdd1119a4b9189092380720742dc6d
120 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, specifically linking to a redirector and a large number of external PDF links, suggesting a link farm or SEO abuse for traffic generation. The primary malicious URL identified is ttraff.com, which is flagged as a redirector. The document body, though heavily obfuscated, contains text related to citation formats, likely a lure to disguise the malicious links.

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=internal+citation+mla+format+website
    • http://files.rltennis.ca/uploads/1/3/1/4/131437669/xemejexanutaj.pdf
    • http://files.isivirginia.com/uploads/1/3/0/7/130738741/2670979.pdf
    • http://files.wildcoyotefarm.com/uploads/1/3/0/7/130739662/410985831ee9c07.pdf
    • http://files.wildcoyotefarm.com/uploads/1/3/0/7/13073
    • https://cdn.shopify.com/s/files/1/0437/4865/5265/files/magipuluxupaziwokomaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/5032/8486/files/sakafifojivapusado.pdf
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/15829951744.pdf
    • https://cdn.shopify.com/s/files/1/0432/7034/0772/files/rixilozigitojis.pdf
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/739980993.pdf
    • https://cdn.shopify.com/s/files/1/0427/8062/3015/files/vutavojizexo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/79355141347.pdf
    • https://cdn.shopify.com/s/files/1/0428/8187/6131/files/suxajejub.pdf
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/4998012583.pdf
    • https://cdn.shopify.com/s/files/1/0431/6174/7620/files/ralumenirare.pdf
    • https://cdn.shopify.com/s/files/1/0438/3758/7606/files/neledizesapid.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/mukevosegimudakes.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_off00009737.bin
c302744bb3508fc4772067a6c66a14cabb99ddbda0a6166c0b0cd06c57e57dc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9737 4984 bytes
font_01_sfnt_off0000a80a.bin
30225cc7561e9012a66d2186ab91f5817e3698521e0f1c61d76ab00a68dcd55d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA80A 9880 bytes

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