Malicious PDF — malware analysis report

Static analysis result for SHA-256 4080ffc2df9810b8…

MALICIOUS

PDF

41.5 KB Created: 2020-07-31 22:50:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c76e559141812a61fb1dc4e16456eb17 SHA-1: 43997cbcb00c2cc6e599a9788b1f7bf73b8a8b99 SHA-256: 4080ffc2df9810b87b24aec9ddc12bd6648be4298065d4d3a36cf8b5c8bbd976
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link and a large number of external links, indicative of a link farm. The document body and heuristics suggest a payment redirection lure, a common tactic in business email compromise attacks. The primary malicious URL identified is https://ttraff.com/pify?keyword=aolmail+simple+free+fun, which is likely used to redirect the user to a malicious site or download further malware.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.com/pify?keyword=aolmail+simple+free+fun
    • http://files.shotwellsharkband.com/uploads/1/3/2/6/132681033/diramad_vegikakafuzamu.pdf
    • http://files.celticfairepdx.com/uploads/1/3/0/9/130969470/kekuxevag.pdf
    • http://files.emiliyaahmadova.com/uploads/1/3/1/6/131636988/4e5878657ac.pdf
    • http://files.jakesden.com/uploads/1/3/2/6/132682281/03bcd41.pdf
    • http://files.stimmung-ensemblevocal.com/uploads/1/3/1/8/131871701/da4689b456.pdf
    • https://cdn.shopify.com/s/files/1/0430/3582/0185/files/pexuwekevigiruni.pdf
    • https://cdn.shopify.com/s/files/1/0436/1306/1277/files/10883587415.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8440/files/80346771449.pdf
    • https://cdn.shopify.com/s/files/1/0431/4152/9762/files/gopig.pdf
    • https://cdn.shopify.com/s/files/1/0437/9269/5456/files/15118418803.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/6950855926.pdf
    • https://cdn.shopify.com/s/files/1/0431/4673/9866/files/jeragunewis.pdf
    • https://cdn.shopify.com/s/files/1/0432/5625/0525/files/tesisavalopona.pdf
    • https://cdn.shopify.com/s/files/1/0438/3657/1808/files/29325281623.pdf
    • https://cdn.shopify.com/s/files/1/0432/2902/0317/files/21029584176.pdf
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/32663014335.pdf
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/fatopogunudawadi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3229/files/jiditegewebaguruxu.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_off000066c8.bin
5bd3b02d5aff398db06affd5bd2eb67b07d96431168609c1d98bd703deb50279		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C8 5036 bytes
font_01_sfnt_off000077ca.bin
0b0ac708aea8bd2305d0aaeadeeb8cdb362401810540be8ddafaa42cd633a778		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77CA 9828 bytes

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