Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b58102db59842c…

MALICIOUS

PDF

50.3 KB Created: 2020-07-31 04:23:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2fdc22061a39934ee0411e3ba5ac5d32 SHA-1: 8c6d688af47792afd0ee309b1609559a1e3b90bd SHA-256: b6b58102db59842c1683015b8a71aa52bb3d0eb89ebd96ba0d6eb142b6e9bb55
138 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM indicating a link farm. One of these links, 'https://ttraff.com/pify?keyword=ibps+recruitment+2020+pdf', is flagged as a malicious redirector. The document body also contains text related to 'Ibps recruitment 2020 pdf', suggesting a lure to attract users searching for recruitment information. The presence of a visual download button lure further supports the malicious intent.

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.com/pify?keyword=ibps+recruitment+2020+pdf
    • http://files.sportsimagephoto.com/uploads/1/3/1/3/131379899/2090814.pdf
    • http://files.indoceylon.com/uploads/1/3/1/4/131437775/gatexiwadabe.pdf
    • http://files.grantaboutique.com/uploads/1/3/2/6/132681579/1549220.pdf
    • http://files.theforest.co.in/uploads/1/3/0/7/130776485/futupitupetonesoko.pdf
    • http://files.dilpatrickmedia.com/uploads/1/3/0/7/130775921/a4b07.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/zasasov.pdf
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/ketavoruz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0592/6809/files/95515535586.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wevanedinuwisuvajolow.pdf
    • https://cdn.shopify.com/s/files/1/0433/3849/8198/files/dizesejexusojivato.pdf
    • https://cdn.shopify.com/s/files/1/0430/4030/9402/files/39347924957.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8863/files/gagawikadarifekefokesit.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/jigeruxame.pdf
    • https://cdn.shopify.com/s/files/1/0436/2688/9374/files/14236383401.pdf
    • https://cdn.shopify.com/s/files/1/0431/4077/6093/files/18832211305.pdf
    • https://cdn.shopify.com/s/files/1/0434/0042/9731/files/zemirigusudigowumamipego.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5445/files/tomopakifiwubuvosubu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1848/4885/files/77196145876.pdf
    • https://cdn.shopify.com/s/files/1/0436/1519/1202/files/vobutetubegapuwolegif.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/
    • https://cdn.shopify.com/s/files/1/0433/3849/8198/files/dize

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000877f.bin
350ab691d355d79d520df18932c0f6ea09ce4c7e13988ec2febf2b385c58475b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x877F 5184 bytes
font_01_sfnt_off00009900.bin
f9c634373b85c8b10ea748e1218ad99e8b96932ac8c055b15f2b4e973483ed47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9900 10264 bytes

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