Malicious PDF — malware analysis report

Static analysis result for SHA-256 488c0d32f00e92cd…

MALICIOUS

PDF

39.5 KB Created: 2020-08-14 02:58:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb79091c4fa32e0181186b381d513cc2 SHA-1: 0d088c84cc9f9351e9e1df2e222465617c5c1c65 SHA-256: 488c0d32f00e92cdc6f523b6a98de9096dc56a6a7f737df0cabe451f75f9905a
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'fighter aircraft simulator games' and the malicious URL. This suggests a social engineering lure to trick users into visiting the redirector, which likely leads to further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=fighter+aircraft+simulator+games+for+android
    • http://sedobud.pinckneywrestling.com/uploads/1/3/1/4/131453870/jezesexi-gozovosepabave.pdf
    • http://files.bubbleytrinkets.com/uploads/1/3/1/4/131452750/topilexup-kuzaluvufujox.pdf
    • http://vikidawap.indigoroadstudio.com/uploads/1/3/0/8/130814328/sekinasivumukukoneg.pdf
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/22362867815.pdf
    • https://cdn.shopify.com/s/files/1/0431/4834/5500/files/bizepajas.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/wakisagu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/resozelofik.pdf
    • https://cdn.shopify.com/s/files/1/0448/7839/7607/files/mijarisevuzivumepu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7282/files/govomerusiliveliveses.pdf
    • https://cdn.shopify.com/s/files/1/0450/4230/3140/files/inorganic_chemistry_atkins_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/8918/3398/files/52534073631.pdf
    • https://cdn.shopify.com/s/files/1/0433/0491/1006/files/morphing_mod_1._8_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1559/files/carrier_mini_split_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/lipejopebeseworuvekazusez.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_off00005bc3.bin
5221ec403846a2de20e81a3d945180e65f9321af36d6b474bc23566fec2d5211		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC3 5392 bytes
font_01_sfnt_off00006dfa.bin
c680d152ce2d8fb2a20f21cec245ae2fc26737d729f0334a357599f3c699685f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFA 10152 bytes

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