Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3d82f8477fe1b59…

MALICIOUS

PDF

48.9 KB Created: 2020-07-25 09:05:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f3c3ce9bf3a3fc686f519ad658254db SHA-1: 5839175a44cde8b34e4c427a41854c878efaad9f SHA-256: c3d82f8477fe1b598cee6d043343d13907639a4b4de1e1b1909e6b7dcf9653c2
160 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it's a malicious redirector and part of a link farm, specifically employing a lure related to payment or bank instruction changes. The embedded URL `https://ttraff.ru/wb?keyword=msce%20pune%20manual%20typing%20result%202019` is flagged as malicious. While no scripts were extracted, the document's structure and linked URLs strongly suggest a phishing or malware delivery attempt.

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.ru/wb?keyword=msce%20pune%20manual%20typing%20result%202019
    • http://files.newcastleyachtclub.co.uk/uploads/1/3/1/4/131406182/1804912.pdf
    • http://files.safepassagemoberly.org/uploads/1/3/0/7/130738701/vukojokur-nuliwabazovuj.pdf
    • http://files.lejolijardin.com/uploads/1/3/1/8/131871744/tubegonirogowubi.pdf
    • http://files.hansingelangoe.com/uploads/1/3/1/0/131070688/3648413.pdf
    • http://files.ornamentsofexpression.com/uploads/1/3/1/4/131455883/vojosa.pdf
    • http://files.newcastleyachtclub.co
    • https://cdn.shopify.com/s/files/1/0432/1368/4891/files/toxikefoguwofurimeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48466687054.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/vujobafuvi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4402/8068/files/vezaderedameje.pdf
    • https://cdn.shopify.com/s/files/1/0432/3826/0899/files/30432911232.pdf
    • https://cdn.shopify.com/s/files/1/0436/1263/5298/files/merumedumeduwalazavuferu.pdf
    • https://cdn.shopify.com/s/files/1/0440/3917/6357/files/14154411084.pdf
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/getetur.pdf
    • https://cdn.shopify.com/s/files/1/0432/6352/5029/files/kojirabuwisaworariluzafa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7759/9383/files/36832545496.pdf
    • https://cdn.shopify.com/s/files/1/0433/7644/3543/files/wuwegobowomusuzuviwuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/7007/0690/files/89492870505.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_off00008089.bin
6637f377fb20716897ef09e040d0db89560ab7d2d4611ab0fbc752a36c07c411
pdf-font-stream PDF embedded font (sfnt) at offset 0x8089 5612 bytes
font_01_sfnt_off0000939a.bin
98076ec6d1668b26925c5016e712bbade586547875ae44e9048e3b3073e1b3c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x939A 10212 bytes