Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a9b44835b5befd3…

MALICIOUS

PDF

34.7 KB Created: 2020-08-01 16:58:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ad96cd382defdd1477c19304f205b7f SHA-1: 5191f4060ed1976f10c230a823fa1a203aa6b6f2 SHA-256: 3a9b44835b5befd30aca8817f9f791444d2d4573245c089076e45b746dde0d06
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to create a link farm or distribute malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=adelerolling+in+the+deep+mp3, which likely serves as a gateway to further malicious activity.

Heuristics 3

  • 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.
  • 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=adelerolling+in+the+deep+mp3
    • http://files.twistedimagenyc.com/uploads/1/3/1/4/131483584/191dcb684324bf.pdf
    • http://files.richardlangchandler.com/uploads/1/3/1/3/131383255/aa090ace141823.pdf
    • http://files.icupearls.org/uploads/1/3/0/8/130814605/zerexukijob_rupomexidi_rasuzodibodaxi.pdf
    • http://files.mmalifestyler.com/uploads/1/3/0/9/130969158/2670699.pdf
    • http://files.be-boosted.org/uploads/1/3/2/7/132740606/lexajuvugadez-lavipitojimu-febexiwexa-nokimavezow.pdf
    • https://cdn.shopify.com/s/files/1/0430/1658/5379/files/60625753746.pdf
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/fowisewofewixixit.pdf
    • https://cdn.shopify.com/s/files/1/0428/8702/0703/files/vomoropujaboxuderuse.pdf
    • https://cdn.shopify.com/s/files/1/0434/2841/3607/files/cpcc_my_college.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/gifts_ideas_for_christmas_2015.pdf
    • https://cdn.shopify.com/s/files/1/0432/6031/3768/files/xorofarokul.pdf
    • https://cdn.shopify.com/s/files/1/0434/5420/2018/files/49561712846.pdf
    • https://cdn.shopify.com/s/files/1/0429/9931/6639/files/49621519668.pdf
    • https://cdn.shopify.com/s/files/1/0430/7543/6698/files/78591031585.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96226605796.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_off00004cab.bin
118578185bff8a2e4ba3ead474fcee2be229718d6428a2487fcae373f4e0bd1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CAB 5140 bytes
font_01_sfnt_off00005dff.bin
6f38414ccf833429f4dd1835ce6f04583fa7c3438e6ff14003bac3b019ade233		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFF 9324 bytes

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