Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb29abfe66dcb7a0…

MALICIOUS

PDF

62.3 KB Created: 2020-08-18 21:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57bd1d74175486ee69770c5e9eaf34eb SHA-1: 50efffa9eefb285ace1222465f328f19775f9d0c SHA-256: fb29abfe66dcb7a06ffcaa780bffa612f61bd3f303c8f7a41200bd9f141988de
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm heuristic, with numerous links pointing to Shopify domains, one of which is identified as the primary malicious entry point. The document body, though heavily obfuscated, contains the malicious URL. The presence of a 'download button' heuristic suggests a lure to encourage user interaction with the malicious link.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=gujarati+barakhadi+english+free
    • http://files.jakob-lorber-australia.net/uploads/1/3/2/6/132682125/9375328.pdf
    • http://files.mnhomeinteriors.com/uploads/1/3/1/4/131405977/4f49d69.pdf
    • http://files.graceandtruthministry.com/uploads/1/3/1/3/131381539/popix.pdf
    • http://files.healthgeography.org/uploads/1/3/0/7/130740589/04993433284466d.pdf
    • http://files.ptfinejewelrydesigns.com/uploads/1/3/2/6/132680932/4c1ae2c0563.pdf
    • https://cdn.shopify.com/s/files/1/0439/3913/5643/files/61569762952.pdf
    • https://cdn.shopify.com/s/files/1/0432/0631/2098/files/clear_guon_stone.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/juwiketifuwexalapi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0311/7719/files/tijadebusadafar.pdf
    • https://cdn.shopify.com/s/files/1/0428/5648/0935/files/fubodeje.pdf
    • https://cdn.shopify.com/s/files/1/0449/6814/9151/files/eclipse_android_google_maps_example.pdf
    • https://cdn.shopify.com/s/files/1/0438/9706/1531/files/30138169535.pdf
    • https://cdn.shopify.com/s/files/1/0434/5187/5481/files/rolijiba.pdf
    • https://cdn.shopify.com/s/files/1/0433/3453/3275/files/nuginisopog.pdf
    • https://cdn.shopify.com/s/files/1/0437/5301/3409/files/sojegugur.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/mipufuruwunog.pdf
    • https://cdn.shopify.com/s/files/1/0433/9095/9766/files/mips_register_conventions.pdf
    • https://cdn.shopify.com/s/files/1/0433/9492/4694/files/53075375176.pdf
    • https://cdn.shopify.com/s/files/1/0436/8846/0441/files/1405963695.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000091ae.bin
a043db09424cf85b913859f6d71f13624ca06b74296a2ef0bdf2070368e72318		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91AE 5480 bytes
font_01_sfnt_off0000a454.bin
119a52afad4343fa72c188578c9508676a6012d98eca4df5245f92c29a00a9e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA454 14880 bytes
font_02_sfnt_off0000d2b8.bin
108b0ea7495508624a4a02e374f9797434bf72e94f423a1c44991850fcaea7c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B8 6736 bytes

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