Malicious PDF — malware analysis report

Static analysis result for SHA-256 273ad2a71319f6b9…

MALICIOUS

PDF

47.0 KB Created: 2020-08-08 11:27:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9335c0d1cdfaf3953278753374991830 SHA-1: fec7775cd899392ecb1e570ba6627a0c5e0718e9 SHA-256: 273ad2a71319f6b96f9d36737ab679bd20e8208c7494c79c7fae16f7a6933aa6
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates this behavior. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests the document is designed to host numerous external links, likely for SEO manipulation or to distribute malicious content. The presence of a URL pointing to a Shopify domain, which is often used for hosting benign files, is also noted.

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=eduardo+bonilla+silva+pdf
    • http://files.poetryteignmouth.com/uploads/1/3/1/0/131070712/novikulazu-jepunorudejomi.pdf
    • http://files.arthealswarwounds.com/uploads/1/3/1/1/131164198/nirinunuxobexovewug.pdf
    • http://files.carrollcountygovernment.org/uploads/1/3/1/4/131453598/1cf7727a8f2eade.pdf
    • http://files.alanbirtwistle.com/uploads/1/3/1/3/131383664/werox_xapedewero_bemidituziv_zurer.pdf
    • http://paxafese.peopleripple.com/uploads/1/3/1/8/131857315/betoko.pdf
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/9972823704.pdf
    • https://cdn.shopify.com/s/files/1/0428/9714/6019/files/power_system_engineering_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/80174927568.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53940500656.pdf
    • https://cdn.shopify.com/s/files/1/0431/8360/3876/files/jojeruvagoxexifurudode.pdf
    • https://cdn.shopify.com/s/files/1/0429/0841/8211/files/always_and_forever_lara_jean_espanol.pdf
    • https://cdn.shopify.com/s/files/1/0430/7510/9013/files/74117295689.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8320/files/10th_class_science_project.pdf
    • https://cdn.shopify.com/s/files/1/0428/1945/3095/files/xeforomitefonizipusuwake.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_off00007890.bin
97f7f47c536a05db6ca5730a9df0bdfa71a383504f371f90059631d8ced03edb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7890 5192 bytes
font_01_sfnt_off00008a4a.bin
4f32584d2573387f28911d640e39eac8ea6cf46a4c58d46206f697c7db68a8c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4A 10716 bytes

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