Malicious PDF — malware analysis report

Static analysis result for SHA-256 97e4d2553b4e14b7…

MALICIOUS

PDF

40.7 KB Created: 2020-08-18 20:18:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64b5dfffeb35f88bdc7f846220f24fd3 SHA-1: 3b3189d93ffb43011084d6e7a3878d21e3921f49 SHA-256: 97e4d2553b4e14b72b1488c8d05ef837edab7384045e8f997c8d0f96b4d0800b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One such link, 'https://ttraff.ru/pify?keyword=farm+simulator+15+guide', is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing the lure. The presence of numerous Shopify-hosted PDF links suggests a link farm designed to boost search engine rankings for malicious content.

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.ru/pify?keyword=farm+simulator+15+guide
    • http://files.m3df.org/uploads/1/3/1/0/131070420/vofojotonotobivog.pdf
    • http://files.rawbeautynyc.com/uploads/1/3/1/4/131437107/xuzod.pdf
    • https://cdn.shopify.com/s/files/1/0431/2173/7882/files/zilevakuwasi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9516/files/fiwizopidoda.pdf
    • https://cdn.shopify.com/s/files/1/0428/3544/3875/files/pevobatutofemoma.pdf
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/molonivi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/wadexovefewopixejuwiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/1566/6849/files/fatewuzo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9471/2228/files/94589136606.pdf
    • https://cdn.shopify.com/s/files/1/0431/5676/6869/files/7.pdf
    • https://cdn.shopify.com/s/files/1/0434/9585/0150/files/attestation_assedic_cesu.pdf
    • https://cdn.shopify.com/s/files/1/0445/6490/6148/files/84328058994.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sobobubujuwin.pdf
    • https://cdn.shopify.com/s/files/1/0437/1588/7256/files/siwetusaluv.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_off00006156.bin
054890959e220a2debd2e9aced9f9220e41cb620ca3227c5fb113c8fc94f504f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6156 5276 bytes
font_01_sfnt_off00007335.bin
f85e0cb72c9524b1e8584787ef6de6671e30a1f4b992d6db1a18b6fdfbd05454		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7335 10276 bytes

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