Malicious PDF — malware analysis report

Static analysis result for SHA-256 abb1510b6c52cf81…

MALICIOUS

PDF

54.0 KB Created: 2020-08-31 19:55:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56b6257992d4aed6ba5d4f12ec7cb41f SHA-1: ab2225618581c78880c6bcca4a1252517827445b SHA-256: abb1510b6c52cf811195a258a9740b3564ca01a0b0b8f4a2c63d5fa36ed0ff90
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text related to a calendar template and a URL that is also present in the heuristics. This suggests a lure to a malicious site, likely for phishing or malware distribution. No scripts were extracted, limiting the analysis of direct payload execution.

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=2018+august+and+september+calendar+template
    • https://cdn.shopify.com/s/files/1/0432/4661/6733/files/fujufuvak.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/pazatebaniwetaguf.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/7996/files/vunudibax.pdf
    • https://static.usrfiles.com/ugd/576447_f77263197675457cbb1f07163f7cc167.pdf
    • https://static.usrfiles.com/ugd/b444d4_1d578def5b9b41fc8bbb42d90271d0a1.pdf
    • https://static.usrfiles.com/ugd/b8c837_e8532522633942448ef398feb5279042.pdf
    • https://static.usrfiles.com/ugd/769f78_a1aa90ebb6604abdb2a485e6a4c47a8e.pdf
    • https://static.usrfiles.com/ugd/b8c837_7094a8965da7427196345dcf8399505a.pdf
    • https://static.usrfiles.com/ugd/529dbf_371f16e89daa4a27a6a71a6e9f7a799d.pdf
    • https://cdn.shopify.com/s/files/1/0434/5177/7185/files/vaxusojanolegux.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5340/files/medidas_de_la_capacidad_de_produccin.pdf
    • https://cdn.shopify.com/s/files/1/0436/5638/0574/files/burepexanakuzokisazix.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/
    • https://cdn.shopify.com/s/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007095.bin
c910780b4de3535dac97a61e126908e7aa4a287809210c38155cb54dd3094d3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7095 5684 bytes
font_01_sfnt_off000083b2.bin
5f46f9b548878faa39ed08556548e8325b4359214ea8bda2c5a510fcce538a26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83B2 10532 bytes
font_02_sfnt_off0000a77f.bin
b10dcad0861d5f3cd9b94bcc0b3008a2f778be511d30989fa3518a4d31d20aaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA77F 16108 bytes
font_03_sfnt_off0000bc2b.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC2B 4324 bytes

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