Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5f0fa65d2858e60…

MALICIOUS

PDF

44.2 KB Created: 2020-08-09 06:41:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65281eed1b547648907b84d6a8edad30 SHA-1: 6e4880714c3acc850f9b8d2a0a23aa71c73c92ae SHA-256: a5f0fa65d2858e6095f1464e82b98ef62e93c1063f29e46c0e1d3fcc30c0bd89
160 Risk Score

Malware Insights

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

The PDF contains numerous links, with one identified as a malicious redirector pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL. The presence of a visible LOLBin command execution instruction suggests the PDF is designed to execute commands or download further payloads upon user interaction with the malicious link.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=uv+spectroscopy+working+principle+pdf
    • http://worakag.pinktuliphotel.com/uploads/1/3/1/3/131398091/kuterajetivubevobike.pdf
    • http://files.cindysmallstudio.com/uploads/1/3/2/6/132682142/tolimukenuk.pdf
    • http://files.theunreached.blog/uploads/1/3/2/7/132740267/5028563.pdf
    • http://files.jcaplan.com/uploads/1/3/1/4/131406518/ead2dc963052d.pdf
    • http://situzip.kinkysalonnola.com/uploads/1/3/1/3/131380429/zajiluduxewubime.pdf
    • http://worakag.pinktuliphotel.com/upl
    • https://cdn.shopify.com/s/files/1/0437/6851/2669/files/lorili.pdf
    • https://cdn.shopify.com/s/files/1/0435/8035/8811/files/xipolelitakozexidaxogegug.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/cmd_serial_number.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/business_strategy_model.pdf
    • https://cdn.shopify.com/s/files/1/0435/1003/8683/files/battlestar_galactica_watch_order.pdf
    • https://cdn.shopify.com/s/files/1/0433/7631/2478/files/sejop.pdf
    • https://cdn.shopify.com/s/files/1/0437/1903/2987/files/54720280662.pdf
    • https://cdn.shopify.com/s/files/1/0432/1932/0992/files/sony_xbr_65x800b_review.pdf
    • https://cdn.shopify.com/s/files/1/0435/1829/6216/files/vorevozedoguw.pdf
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/kilubigumiko.pdf
    • https://cdn.shopify.com/s/files/1/0428/8738/1155/files/52301272231.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5600/files/fezibegapujolepin.pdf
    • https://cdn.shopify.com/s/files/1/0438/6009/9222/files/gexodisijurepemom.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_off00006e90.bin
b9412ec9f0994e51f2918a6f59c0dfe5396f95c6112013f8f43ed626565c28b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E90 5424 bytes
font_01_sfnt_off0000813a.bin
a96de19f9979afdca7165ca25e566dc063ba561fb370493dbb86431a111ee6e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x813A 9992 bytes