Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b272073e33bf42c…

MALICIOUS

PDF

54.8 KB Created: 2020-08-19 02:10:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c5ad6ed3fa2c522db1b2e7b0e81ba69 SHA-1: cdf29bd13eb2a92366467e1c7da9d035f499519a SHA-256: 2b272073e33bf42c5bffd34ab802153470432ad72d34c2994f7988b01d434d94
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised with a lure related to 'Krispy kreme report card rewards'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many of which are hosted on Shopify. The primary malicious URL is the redirector, which likely leads to further malicious content or phishing pages.

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.com/pify?keyword=krispy+kreme+report+card+rewards
    • http://pivova.corpuschristiquilters.com/uploads/1/3/1/3/131398091/1150612.pdf
    • http://naregujok.cpcfamilies.org/uploads/1/3/1/4/131452883/nexojukojoruda.pdf
    • http://rawete.turquoisematrix.com/uploads/1/3/0/8/130814124/fafuraz.pdf
    • http://files.palmerdavidart.com/uploads/1/3/1/8/131856646/843985ba0b1ed.pdf
    • http://padibatu.danielles-boutique.com/uploads/1/3/1/4/131453206/4239252.pdf
    • https://cdn.shopify.com/s/files/1/0434/2536/6165/files/wofakuviwajemifupajazikof.pdf
    • https://cdn.shopify.com/s/files/1/0428/9455/7350/files/94978394337.pdf
    • https://cdn.shopify.com/s/files/1/0434/7153/6290/files/autodesk_fusion_360_introduction_to_parametric_modeling.pdf
    • https://cdn.shopify.com/s/files/1/0437/9171/2405/files/nccn_guidelines_gastric_adenocarcinoma.pdf
    • https://cdn.shopify.com/s/files/1/0430/0328/1571/files/bowapodijabowotog.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/61318083253.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/35567364040.pdf
    • https://cdn.shopify.com/s/files/1/0443/6285/8652/files/academic_writing_genres.pdf
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/xofefupuzusasabavuze.pdf
    • https://cdn.shopify.com/s/files/1/0433/5602/9093/files/free_kjv_study_bible.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/3526947000.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/impact_of_globalisation_in_developing_countries.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007276.bin
965d4e4d87793a3a3f3725a28e44250572d279220e0a5d3f03387f28815e35d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7276 5096 bytes
font_01_sfnt_off000083e6.bin
e1b4aff3a60271d5da47b22c396f4087211b56f093fa5dba3d83b2292c824e15
pdf-font-stream PDF embedded font (sfnt) at offset 0x83E6 10976 bytes
font_02_sfnt_off0000a993.bin
f3b95f1269985bafc3dfb9b5b35e76df8a4d57039a143c013aed99c7cf3a4a89
pdf-font-stream PDF embedded font (sfnt) at offset 0xA993 16344 bytes
font_03_sfnt_off0000bf0c.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xBF0C 4324 bytes