Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f76f5ccdf233c06…

MALICIOUS

PDF

45.3 KB Created: 2020-08-24 17:06:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 599cb2882850f3ddea33575bb9420865 SHA-1: 8346e93ea841f7abf5dbdafda132f6aa3f478e03 SHA-256: 7f76f5ccdf233c067d5d2e4af1bcc9376f3d26ae4377da34deefca00af5c7804
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains a reference to the same malicious URL. The primary attack pattern involves luring users to malicious infrastructure via these embedded links.

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=angry+birds+go+apk+data
    • http://files.easternchi.com/uploads/1/3/1/0/131070115/7164164.pdf
    • http://dawid.leonardcarney.com/uploads/1/3/0/8/130814030/joluwuf.pdf
    • http://files.matchmypartytheme.com/uploads/1/3/0/7/130775651/rujezela_jawabar.pdf
    • http://files.babosamerebhagwan.com/uploads/1/3/1/4/131437779/siwuze_katilifipufepug.pdf
    • http://nawonew.a-1autoinc.com/uploads/1/3/1/4/131453724/sozavosijun-gizamugano-xaxusufuzevi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1248/8343/files/autocad_2020_printer.pdf
    • https://cdn.shopify.com/s/files/1/0427/4946/0636/files/42784576073.pdf
    • https://cdn.shopify.com/s/files/1/0437/7857/2450/files/52698538010.pdf
    • https://cdn.shopify.com/s/files/1/0428/8629/9815/files/dukigolefigapaben.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/nujes.pdf
    • https://cdn.shopify.com/s/files/1/0439/8442/1022/files/bixajururojakovofuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/87198132275.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/gilawopafedisozuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21086069096.pdf
    • https://cdn.shopify.com/s/files/1/0432/0044/6626/files/sociology_optional_syllabus_for_upsc.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_off000062c7.bin
d72cef8997653f3acb84c5bcca2f2941683a51e62fff63a39c01205bf61cf47b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62C7 5388 bytes
font_01_sfnt_off0000751d.bin
7a02da73c5ff24218d04b188db7d31ceb9303d5dedd43b645f18a615a19d9b6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x751D 6068 bytes
font_02_sfnt_off000084ce.bin
79bd222a23e453b6c56cd1f80e90826ab693194994f97e9ad327ccece1d884de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84CE 10268 bytes

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