Malicious PDF — malware analysis report

Static analysis result for SHA-256 b085b2f0d999fb1f…

MALICIOUS

PDF

37.2 KB Created: 2020-08-07 12:45:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79ac5fd3bba0b41b55e371cea18a3cb9 SHA-1: c09914eb2774b6b1f1cb3a5f5b87c46527367dea SHA-256: b085b2f0d999fb1f98862da347106e9de36e4d9105860823f34e648f39565ab6
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links redirects through ttraff.com, a known malicious redirector. This suggests the document is designed to lure users to malicious websites, potentially for phishing or malware distribution. The PDF structure and the presence of numerous external links are indicative of an SEO poisoning or link farm attack.

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=asean+smart+cities+network+pdf
    • http://files.sachkiretkaur.com/uploads/1/3/2/7/132740352/godol-felegi-depumir.pdf
    • http://files.artistryofwildlife.com/uploads/1/3/1/6/131636683/9857d78025b00.pdf
    • http://pujizum.spicehutcalgarycanada.com/uploads/1/3/1/4/131438216/7020896.pdf
    • http://files.c60ultrapure.com.au/uploads/1/3/1/3/131398530/sasezopunuvi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1241/5907/files/livexupajet.pdf
    • https://cdn.shopify.com/s/files/1/0430/8199/0304/files/9811049300.pdf
    • https://cdn.shopify.com/s/files/1/0440/0267/2798/files/life_saving_appliances_en_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/64599988090.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/tokokaloj.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6344/files/felusinudakigodosidagafok.pdf
    • https://cdn.shopify.com/s/files/1/0431/2154/1271/files/kunifigiridirusebufaligu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/minuet_in_g_js_bach.pdf
    • https://cdn.shopify.com/s/files/1/0429/7008/7587/files/9450236735.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/48299011157.pdf
    • https://cdn.shopify.com/s/files/1/0432/6660/5211/files/62756040119.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/99390779836.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/medical_certificate_rto.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_off000053e2.bin
4eaba284b2b7d02e8c3f96bcd9bebed6e27ece599ba87f95d90777a9b093326b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53E2 5416 bytes
font_01_sfnt_off0000664d.bin
2729490ac747a495b1794c1c59e8210c57fc3d22cdb0e6a8330ae115c4a49b48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x664D 9688 bytes

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