Malicious PDF — malware analysis report

Static analysis result for SHA-256 147843eb96ce369e…

MALICIOUS

PDF

41.7 KB Created: 2020-08-29 20:43:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 424279d1f0cbdde1980ed36b3657d249 SHA-1: 3abef48e1a0590ba058a56092380a2a398bc81bd SHA-256: 147843eb96ce369eef437045f391e3d7ef11248219136190ac003ebbb3029610
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for malicious redirector links, pointing to ttraff.com. The document body, though heavily obfuscated, contains the URL https://ttraff.com/wix?keyword=comment+fonctionne+un+orgue, suggesting a lure to a malicious site. The presence of numerous other PDF links also indicates a potential link farm or redirection scheme.

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.com/wix?keyword=comment+fonctionne+un+orgue
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_cb9e44ca385e449696d4bb10c0f6fc92.pdf
    • https://static.usrfiles.com/ugd/b8c837_64f0dd99f05a4b548b776fd9b4b409ed.pdf
    • https://static.usrfiles.com/ugd/70a38d_aa4f8782734842be8008c24b84bee657.pdf
    • https://static.usrfiles.com/ugd/1decf9_7bae13cb2f404db9b64318800e6f4bdf.pdf
    • https://static.usrfiles.com/ugd/238140_3eff53022de84c68bc39ec6708440b0e.pdf
    • https://static.usrfiles.com/ugd/b8c837_85196644eabb4488bdd8950c3fdd374f.pdf
    • https://cdn.shopify.com/s/files/1/0429/9934/9407/files/philadelphia_street_map.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/jandy_aquapure_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/7367/4142/files/49466306883.pdf
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/best_voicemeeter_settings.pdf
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/biwadepiwotesi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/dedajezeke.pdf
    • https://cdn.shopify.com/s/files/1/0440/7066/6392/files/33803074426.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006246.bin
1623cb409918d96289440d6d52e1ac9e98a26e58fd1162dabfa31dbff030a794
pdf-font-stream PDF embedded font (sfnt) at offset 0x6246 4688 bytes
font_01_sfnt_off00007225.bin
46c0f2d36d96d0245f011f5a31c0375c3e3621ab0890f471a0bcdf50853285f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7225 12392 bytes