Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ee4a0cc0ca8aeeb…

MALICIOUS

PDF

45.1 KB Created: 2020-08-08 07:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 674c4f107078a9b5c299e9b971bd2c70 SHA-1: 0741abfb77bcc71f3920760fb5ede61640164b46 SHA-256: 4ee4a0cc0ca8aeebc907b9940f12a12ba0e748097f49cf37815d39017601eb40
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text related to a healthcare manual and the malicious URL. The primary attack vector appears to be a phishing lure, directing users to malicious infrastructure.

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.cc/pify?keyword=2020+aha+bls+for+healthcare+providers+manual+pdf
    • http://files.carrshieldcampingbarn.co.uk/uploads/1/3/1/8/131871874/javumit_jefabagew_pufamirimotipem.pdf
    • http://bajeza.mattdweed.com/uploads/1/3/0/7/130740141/xupuduxoze.pdf
    • http://files.vermonttrufflecompany.com/uploads/1/3/2/7/132710676/totokesolemidovagel.pdf
    • http://files.drugcrisisinourbackyard.org/uploads/1/3/1/4/131453106/mezomolumuzadodo.pdf
    • http://files.tarabooth.com/uploads/1/3/1/4/131482887/befegiloxobutefapow.pdf
    • https://cdn.shopify.com/s/files/1/0434/3051/0758/files/zulevoxakigibavixipovaxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4029/2520/files/rezodijanazud.pdf
    • https://cdn.shopify.com/s/files/1/0436/2951/0814/files/business_card_creator.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tozonolemudafolafoxi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9524/4441/files/commercial_agency_agreement.pdf
    • https://cdn.shopify.com/s/files/1/0437/1641/1547/files/66615227527.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/lixevuref.pdf
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/87097760625.pdf
    • https://cdn.shopify.com/s/files/1/0448/5742/6081/files/intel_hd_4600.pdf
    • https://cdn.shopify.com/s/files/1/0434/8903/4402/files/git_move_changes_to_new_branch.pdf
    • https://cdn.shopify.com/s/files/1/0430/1937/0659/files/git_stash_drop.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/epigenetica_conductual_enric_corbera.pdf
    • https://cdn.shopify.com/s/files/1/0437/8312/7191/files/2020_calendar_free_printable.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063fd.bin
2b97b2b43c278285d2ea81d49e46577adad1e45e0769b708816e2b37ebf85691
pdf-font-stream PDF embedded font (sfnt) at offset 0x63FD 5656 bytes
font_01_sfnt_off00007702.bin
1b7e6a66cbdeadf74baefd34f7e17496922829508abfdf7b284de884ac2d3a3f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7702 9932 bytes
font_02_sfnt_off000098bb.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x98BB 4324 bytes