Malicious PDF — malware analysis report

Static analysis result for SHA-256 47a168db4245f2bf…

MALICIOUS

PDF

42.2 KB Created: 2020-08-20 05:52:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c5ea1d78be2a45ffce08ede7b2fa152 SHA-1: 43389538d2e62ea61a29f04ec857a85b277d4c1f SHA-256: 47a168db4245f2bff582e3810e347b18b7d63699eb03fce91292686bd2bcfb84
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector (ttraff.com). The document body, though partially garbled, suggests a lure related to a 'Kerry consulting salary guide'. The presence of a link farm heuristic indicates an attempt to distribute content or traffic, likely for malicious purposes. The primary malicious IOC is the redirector URL, which is used to obscure the final destination.

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=kerry+consulting+salary+guide
    • http://files.613u.com/uploads/1/3/1/4/131453399/jiwum-vedenaw-kewagavepogos-kigupugusaw.pdf
    • http://files.premierbeachpropertymanagement.com/uploads/1/3/2/6/132683165/d0fa61b31b.pdf
    • http://komuxuw.skellysongs.com/uploads/1/3/1/4/131453598/dewojaf.pdf
    • http://butozozu.soulhealthservices.com.au/uploads/1/3/1/8/131856907/sexujevirudazarojeva.pdf
    • http://zogezeju.agileinspection.com/uploads/1/3/1/4/131437987/pemabafok_sabokikatinudur.pdf
    • https://cdn.shopify.com/s/files/1/0450/3266/9334/files/flat_belly_diet_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0449/1545/8215/files/44152277139.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8246/files/lamomarulojazixi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3223/9528/files/catalizadores_biologicos.pdf
    • https://cdn.shopify.com/s/files/1/0444/5303/6199/files/15756928907.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mefawubizujoki.pdf
    • https://cdn.shopify.com/s/files/1/0438/8398/7096/files/tetej.pdf
    • https://cdn.shopify.com/s/files/1/0452/5680/2461/files/attestation_de_stage_maroc.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pijajaza.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gevuruliwineda.pdf
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/17704486007.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_off000059fd.bin
99c7e7c2c8056755b52522bdbc1516b144adeca590ca5ab63bced0213e17e8fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59FD 5180 bytes
font_01_sfnt_off00006bb3.bin
709f44c36408e51fef42ae16e39b48844ddd9b17c169e815f81fb9832af0e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB3 15860 bytes

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