Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed1078520cb615cb…

MALICIOUS

PDF

49.8 KB Created: 2020-08-19 16:14:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 201826196758e1a0bbc648a3aa9a3b25 SHA-1: 3dab50cd294a8555978045e715ab210639342ddf SHA-256: ed1078520cb615cb902e9a1647c7923ebd681368636e1837345def3cd522042c
130 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector link and a link farm, disguised as a payment acknowledgement letter template. The primary malicious URL identified is https://ttraff.ru/pify?keyword=payment+acknowledgement+letter+template, which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains references to the payment lure and the malicious URL.

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.
  • 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
  • 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=payment+acknowledgement+letter+template
    • http://files.rabbiklein.com/uploads/1/3/0/7/130738534/karavididujal-mukawimaxumekax-genawada-munovine.pdf
    • http://files.papermagicbook.com/uploads/1/3/1/8/131860787/nelakojopotazedi.pdf
    • http://babawad.406cavoodles.com/uploads/1/3/0/8/130813528/gunivexigifasawinode.pdf
    • https://cdn.shopify.com/s/files/1/0430/6714/6397/files/mathematics_grade_7_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/7930/2296/files/call_break_playing_card_game_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/nomiwebivolidamakiserav.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/vebeginuvuwutanivakitoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/2501/4685/files/tv_guide_sydney.pdf
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/14691049640.pdf
    • https://cdn.shopify.com/s/files/1/0429/4325/0588/files/4169389449.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/1/0429/8611/1137/files/n

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079f9.bin
85b692c1c636aed9ab1240d2a7361179fdd6c0849396a06064984f922e967b4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79F9 2828 bytes
font_01_sfnt_off000083f3.bin
795c2b209eb2b8e35112a7e9e5a8891572f749a963620e00042de71711249a03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83F3 5472 bytes
font_02_sfnt_off00009690.bin
bf032ed96cfce0ed64f0a98209a3c86d04aa6370ca19f74a18b8154cacb2b9df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9690 10364 bytes

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