Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d391962d92f2f6…

MALICIOUS

PDF

40.7 KB Created: 2020-08-03 23:29:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 598026b1f09c9af4b80f8a1d967ea5a7 SHA-1: 68b2e03f0158150623b095a9af2be0edf3899eaf SHA-256: 88d391962d92f2f673c8a56ac8df44e0bdb404928752447f4fa5f68e7f7d5c08
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 technique often used for SEO manipulation or to redirect users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure at ttraff.com. The document body, though heavily obfuscated, contains the same redirector URL and a reference to a PDF file hosted on cdn.shopify.com, suggesting a link farm or redirection scheme.

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=fiche+technique+pisciculture+hors+sol+pdf
    • http://files.biblesforpakistan.com/uploads/1/3/1/3/131379296/5665074.pdf
    • http://files.bloominozzieclicks.com/uploads/1/3/1/4/131437380/jatigirozifil.pdf
    • http://files.wellaromanaturals.com/uploads/1/3/0/8/130874422/nesutatokaxedakip.pdf
    • http://files.larahues.com/uploads/1/3/1/4/131454034/gujap_vajogipolafijuk_pisopinet.pdf
    • http://files.empireplumber.com/uploads/1/3/1/4/131483143/8100950.pdf
    • https://cdn.shopify.com/s/files/1/0428/2236/9446/files/uplay_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0429/3227/3319/files/2430665299.pdf
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/26404161192.pdf
    • https://cdn.shopify.com/s/files/1/0430/6577/0133/files/mafatexi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4248/0021/files/gekonokekopefitaril.pdf
    • https://cdn.shopify.com/s/files/1/0435/3903/8360/files/27772808579.pdf
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/38844981954.pdf
    • https://cdn.shopify.com/s/files/1/0430/8602/0761/files/kafemaxafekoju.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/34122940094.pdf
    • https://cdn.shopify.com/s/files/1/0429/5432/6179/files/jafosipo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8944/4510/files/11264971514.pdf
    • https://cdn.shopify.com/s/files/1/0436/8737/9097/files/ladejetukodis.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/tokolemuruvixavufeg.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_off00006186.bin
a26d1b3bca0c9396731ea61f73b2f81a105761a858cd70ec2ca3428d6e7489ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6186 5112 bytes
font_01_sfnt_off000072ec.bin
6f7709abea84117b5955280257e4c1d542bf33e73296436effcb3195a62baf08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72EC 10068 bytes

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