Malicious PDF — malware analysis report

Static analysis result for SHA-256 898f4b963b2ff443…

MALICIOUS

PDF

81.2 KB Created: 2020-08-11 20:21:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c565031f73bbf193234803067d5d640 SHA-1: b1e08231151d8f9e99e96d5c3132342dc0be70e9 SHA-256: 898f4b963b2ff4436a578c1035cb9b3a2879fabe26ea32646078d88dcceb8391
120 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'pollination of flowers pdf'. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted from this sample.

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=pollination+of+flowers+pdf
    • http://files.clannandrumma.co.uk/uploads/1/3/1/8/131872015/xonasazakudu.pdf
    • http://kisibuk.segwaystationcyprus.com/uploads/1/3/0/8/130874254/pinozizuvofutojaj.pdf
    • http://files.mvhsmajorslibrary.com/uploads/1/3/2/7/132740464/4969545.pdf
    • http://files.kevintdcobbs.com/uploads/1/3/0/7/130739789/desuvuvosudamebufab.pdf
    • http://files.windowsofhopeintl.org/uploads/1/3/0/9/130969310/772c98314.pdf
    • https://cdn.shopify.com/s/files/1/0435/3867/7924/files/buwujuruzirobivokuzapeg.pdf
    • https://cdn.shopify.com/s/files/1/0432/4016/1435/files/zavovikabogimomuwisopa.pdf
    • https://cdn.shopify.com/s/files/1/0440/0427/8422/files/puwaluwide.pdf
    • https://cdn.shopify.com/s/files/1/0429/6101/0842/files/88283285830.pdf
    • https://cdn.shopify.com/s/files/1/0436/9186/8313/files/cool_math_games_ninja_painters.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/634636378.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3232/files/computational_complexity.pdf
    • https://cdn.shopify.com/s/files/1/0432/6539/2804/files/75252055575.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/likevinorowaridijisovekif.pdf
    • https://cdn.shopify.com/s/files/1/0440/5516/7126/files/texanamif.pdf
    • https://cdn.shopify.com/s/files/1/0429/1005/6615/files/8758066361.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_off0001012f.bin
b8fccf573caf6e642d153057d2897e615b6a259525bdbaa6287dea921b5bda1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1012F 5128 bytes
font_01_sfnt_off000112bc.bin
e945f32058fdbffc36c3b52c7a22005c99730981d3a3ccd38ab91c73f6a26bcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112BC 10736 bytes

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