Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ec321165fa7ef9…

MALICIOUS

PDF

49.9 KB Created: 2020-09-01 16:32:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85a63e9f7bee30c325955f7f98272326 SHA-1: f19ebb0ab2b5e11ef19d5b978f384aac0fe63292 SHA-256: 03ec321165fa7ef9c121b0a105e5adb4fbc82786c7231bd1841c67e9b11a19a6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, disguised as a safety data sheet. This redirector likely leads to further malicious content or malware download. The PDF also exhibits characteristics of a link farm, with numerous embedded links pointing to external resources, many of which are benign but some may be malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.link/wix?keyword=cascade+dishwasher+detergent+safety+data+sheet
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/2217/0787/files/42746297674.pdf
    • https://cdn.shopify.com/s/files/1/0433/7664/0156/files/python_list_comprehension.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/juzopuzenafososokazulu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/repokitudazafirafuposozo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/xiridutonumama.pdf
    • https://static.usrfiles.com/ugd/f0e51d_dd4d88f76142462386f694b822abf83c.pdf
    • https://static.usrfiles.com/ugd/b8c837_29b7b00f22784d17b0900dcefed3238d.pdf
    • https://static.usrfiles.com/ugd/affb4a_871bf19d1454478885ec25be6b55be81.pdf
    • https://static.usrfiles.com/ugd/756799_afdd0f351bb44d02b2cc4d0d80dbf219.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5458e4420894b33a049d23c8473a727.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_c62fe8a624dd4c0696d45b462281b2bd.pdf
    • https://static.usrfiles.com/ugd/ad2ade_5494cfc916da47be9c4bef9f08b1a4df.pdf
    • https://static.usrfiles.com/ugd/191a6d_73e2cc1015a44f9a9f0c7132b2dedf67.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/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00009dc9.bin
d9ef93047a962711f4dbf1c5e4d170888840b3e6348a88d28aab0f030fe16120
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9DC9 18176 bytes
font_00_sfnt_off00006701.bin
f0db45603d128f684386563ab98b559b002c9b1ac1c0b2bf2e5f0972cd0fb658
pdf-font-stream PDF embedded font (sfnt) at offset 0x6701 5348 bytes
font_01_sfnt_off00007942.bin
2281ff9ebeeec719e03dc6c1c9b648494ad9fc449712d9b63a3489c10f06d2dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7942 10616 bytes