Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6a6f3a79f792598…

MALICIOUS

PDF

47.2 KB Created: 2020-08-14 10:01:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d89ebe6afe63254d02657933148829e SHA-1: 84bef0881ee88b356e2c29938a2c27813ba7b008 SHA-256: c6a6f3a79f7925981178717070ad077e21a2f11467f7902083ccfc7ff52b2d1a
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL. This indicates the document's purpose is to redirect the user to malicious infrastructure, likely for further exploitation or phishing.

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/wb?keyword=razonamiento%20logico%20concepto%20pdf
    • http://files.fogfreemath.com/uploads/1/3/1/6/131606111/fudamolekutogaf.pdf
    • http://files.wholesale-numismatics.com/uploads/1/3/1/6/131637136/dcabc6caed.pdf
    • http://memuwimob.lesliestarphotography.com/uploads/1/3/1/3/131380213/896567.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/49453027058.pdf
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/vasidopevalukul.pdf
    • https://cdn.shopify.com/s/files/1/0438/3604/7525/files/noruvomazimakug.pdf
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/articulos_cientificos_quimica.pdf
    • https://cdn.shopify.com/s/files/1/0454/8014/9144/files/95256610594.pdf
    • https://cdn.shopify.com/s/files/1/0428/7827/1641/files/bikuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5562/files/ganusabebetalakiwojozi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4531/3941/files/33908498364.pdf
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/gapagusatabuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xiguxalenagidofivixonagez.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/wibebolimozidurepijifure.pdf
    • https://cdn.shopify.com/s/files/1/0433/4495/3509/files/94754548866.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b28.bin
9e890821e3da43e3313d7ebe8769cb172c479a7db777d01b3493a384598f7ec2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B28 5044 bytes
font_01_sfnt_off00007c4c.bin
3acb4f694a00f5642d623fe28210603ea910d9bc30cca511b7501bc7872978a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4C 11120 bytes
font_02_sfnt_off0000a051.bin
ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA051 4324 bytes

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