Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfa0d1983fb63c3a…

MALICIOUS

PDF

44.3 KB Created: 2020-08-17 04:12:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b154df066362b57fd83fa9ae657da78e SHA-1: 4f82bd1fcf971d07d86496bdcbe232751d5f754c SHA-256: dfa0d1983fb63c3a753f88c66d873ee98b2e0742f1a07f84f62c35108ada9dc0
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body text, though partially corrupted, includes the string "Owners manual tesla 3" and a URL that matches the malicious redirector. This suggests a social engineering attack aimed at tricking users into visiting malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=owners+manual+tesla+3
    • http://files.eventsmithphotobooths.com/uploads/1/3/0/9/130969036/luzulapemu.pdf
    • http://files.belangerbagels.com/uploads/1/3/1/4/131453060/5cc655b3f.pdf
    • http://fasud.prickwillowmuseum.com/uploads/1/3/1/8/131856726/b2a6b7e31d8cb.pdf
    • https://cdn.shopify.com/s/files/1/0429/5213/0716/files/computer_shop_bill_format_in_word.pdf
    • https://cdn.shopify.com/s/files/1/0430/8326/8257/files/xumusafuzure.pdf
    • https://cdn.shopify.com/s/files/1/0435/2576/7327/files/lajad.pdf
    • https://cdn.shopify.com/s/files/1/0436/2171/2034/files/black_female_names.pdf
    • https://cdn.shopify.com/s/files/1/0434/5777/3725/files/93765256795.pdf
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/attestation_employeur_modele.pdf
    • https://cdn.shopify.com/s/files/1/0438/2624/9885/files/akon_lonely_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16711599054.pdf
    • https://cdn.shopify.com/s/files/1/0439/8632/1566/files/vasutujisuxuniteroxan.pdf
    • https://cdn.shopify.com/s/files/1/0432/7964/6878/files/ribagegisozoxexigojamu.pdf
    • https://cdn.shopify.com/s/files/1/0440/9557/0072/files/68515066675.pdf
    • https://cdn.shopify.com/s/files/1/0428/7479/8247/files/36074336530.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57355052908.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_off00006fe8.bin
6e4db86dbe3fb1b9f8fe8c4b4c74a5106e3a4fc3e8bb57f66f485bbc3702984f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE8 5112 bytes
font_01_sfnt_off0000813b.bin
eef099803c3efb180e9bcaa22f22e0d0880fdf7058d590b2bfc4b65e5d15068c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x813B 10364 bytes

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