Malicious PDF — malware analysis report

Static analysis result for SHA-256 b91b1b70fda3b9fe…

MALICIOUS

PDF

41.9 KB Created: 2020-08-02 19:36:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 782feb9db483547e9a27776b2c708770 SHA-1: 1dd157681b6e9b8895189767ade3cfa377ed99a9 SHA-256: b91b1b70fda3b9fe5cf5dedf637c47ca71867fc9b89e421dcd09fb3b6c0979c6
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which are hosted on Shopify. One critical heuristic identified a malicious redirector link pointing to 'ttraff.cc' which is associated with the keyword 'gta liberty city stories cheats'. This suggests a social engineering lure to trick users into clicking the malicious link, likely leading to malware download or a phishing page. The document body contains the same lure text and URLs.

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=gta+liberty+city+stories+cheats
    • http://files.supportiveconceptionssurrogacy.com/uploads/1/3/1/4/131409909/954939c1cd3ced.pdf
    • http://files.saikmusic.org/uploads/1/3/2/7/132740415/67c8893d65fe7.pdf
    • http://vevox.cwoodtheatre.com/uploads/1/3/1/8/131872149/8694447.pdf
    • http://files.iwfmasters.org/uploads/1/3/1/4/131454501/belivir_rafomepiw_vasasusanovuwa_jazarofuj.pdf
    • http://files.menifeevaporpros.com/uploads/1/3/1/1/131163643/bisubigumojarob.pdf
    • https://cdn.shopify.com/s/files/1/0432/9593/2574/files/83572481363.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/85560297279.pdf
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/fibumupipozuxitemun.pdf
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/99111256691.pdf
    • https://cdn.shopify.com/s/files/1/0436/9140/9558/files/88486348689.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/42280788145.pdf
    • https://cdn.shopify.com/s/files/1/0436/2970/7422/files/lekaxugoxuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/3133/0969/files/16221782648.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71860998709.pdf
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/waledokidoluzaki.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6787/files/kuninuginogofolem.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_off0000657d.bin
58f6c28a78e523d0108cf12701e6ae3c832db2b6a27acc40fd8ea81acb8473a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x657D 5160 bytes
font_01_sfnt_off0000770d.bin
3d407af981998855cf35698f408ee2796b5d3388960962b97bd560d60c0d8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x770D 10516 bytes

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