Malicious PDF — malware analysis report

Static analysis result for SHA-256 b512199ca475bd5d…

MALICIOUS

PDF

33.3 KB Created: 2020-08-04 19:09:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b7634de1ed95b4300e0ab8f9245786a SHA-1: 1466b7658365ee08c6446ece2abb38848f9938d0 SHA-256: b512199ca475bd5d580117a5ebdb60dbd421578e359fdb6d713035d113cd17c5
120 Risk Score

Malware Insights

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

The PDF file contains a lure document disguised as an occurrence report, with the primary malicious intent being redirection to external URLs. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates a direct link to a known malicious redirector, and PDF_SEO_LINK_FARM shows a large number of embedded links, many hosted on Shopify, likely to manipulate search results or host further malicious content. No scripts were extracted from this sample.

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=boletim+de+ocorrencia+sc+pdf
    • http://lokegibop.stonewallsaddles.com/uploads/1/3/0/7/130740596/92922f0bb.pdf
    • http://files.sandiegotranslationcenter.com/uploads/1/3/1/3/131398547/8f8868c9f313f5.pdf
    • http://files.culturalkapital.com/uploads/1/3/1/4/131406714/fudolafawol.pdf
    • http://files.katoutofbag.com/uploads/1/3/1/4/131437503/jilixelup_supekufox_pazuzagekil_nurik.pdf
    • https://cdn.shopify.com/s/files/1/0434/0390/3127/files/gasirafojumuxig.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/lomevuvapot.pdf
    • https://cdn.shopify.com/s/files/1/0434/6383/5814/files/mafipivewower.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/38705865840.pdf
    • https://cdn.shopify.com/s/files/1/0435/3094/4671/files/blue_maned_lynel.pdf
    • https://cdn.shopify.com/s/files/1/0438/0455/7469/files/film_directing_shot_by_shot.pdf
    • https://cdn.shopify.com/s/files/1/0428/9930/8711/files/10115893307.pdf
    • https://cdn.shopify.com/s/files/1/0429/3741/7891/files/679407095.pdf
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/biology_dictionary_a_z.pdf
    • https://cdn.shopify.com/s/files/1/0433/9931/5619/files/xeforukelufejokopeku.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8340/files/banosepozi.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_off00004601.bin
367e76a3bd5c9a307c7a051a08d951ed2cb799608066ec82598b054386aeae79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4601 5348 bytes
font_01_sfnt_off00005817.bin
8ca73ee284e12b9783c1e62cc42c38294a12fd0eb29343e0a73a1011df2ee5ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5817 9516 bytes

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