Malicious PDF — malware analysis report

Static analysis result for SHA-256 e79302e391fc4740…

MALICIOUS

PDF

41.8 KB Created: 2020-08-14 03:09:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67b8d2793d586104dd1c5530fb94ddc0 SHA-1: 76784f4a33379c3b2a74aa01defd7f2ae5d17c6a SHA-256: e79302e391fc474091d6bc1d0f906e3634e94b64f5364db4631cf675eb6cfc9b
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for an 'administrative procedures manual'. The presence of a link farm further suggests an attempt to distribute malicious content or manipulate search engine results.

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=administrative+procedures+manual+pdf
    • http://files.chloedaniellewhite.com/uploads/1/3/0/8/130814902/6760256.pdf
    • http://files.northcountyorganichealing.com/uploads/1/3/1/3/131381078/danemiwusosojobonab.pdf
    • http://bemuvuma.pslhsband.com/uploads/1/3/1/4/131437709/ed1454bd39ce77.pdf
    • http://files.redcarblues.com/uploads/1/3/1/0/131070566/aa412100cf54f.pdf
    • https://cdn.shopify.com/s/files/1/0429/9105/9097/files/labajimegazidinojudu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1375/7339/files/28476772051.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xozujegemuzudileruzodedus.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5400/files/29333927781.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87743453122.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zukukujumifuxutage.pdf
    • https://cdn.shopify.com/s/files/1/0437/9960/9505/files/12760089313.pdf
    • https://cdn.shopify.com/s/files/1/0434/5063/0296/files/bavugerebizolotoxuli.pdf
    • https://cdn.shopify.com/s/files/1/0435/4814/7867/files/fojagexozojazebewevero.pdf
    • https://cdn.shopify.com/s/files/1/0438/9981/4040/files/fiche_de_paie_2020.pdf
    • https://cdn.shopify.com/s/files/1/0438/6881/5528/files/cantico_delle_creature_testo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/43693726489.pdf
    • https://cdn.shopify.com/s/files/1/0432/9550/6592/files/69101085950.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_off0000656c.bin
09f7f55a2936ec55dd7131986f36bf6343ba8d64abe3cf863e637392ca373501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x656C 5352 bytes
font_01_sfnt_off0000778a.bin
a4b5e52b5f5ca26a48602a8df5efba671170bc77be3bb3abddce8d43ca55795d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x778A 10088 bytes

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