Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b7c54a19a545e8…

MALICIOUS

PDF

45.4 KB Created: 2020-09-08 05:48:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ebf4692cbd494a7ab0958834629b61d SHA-1: cd7203678b42a5b14f37532a745b47a2509aa096 SHA-256: 64b7c54a19a545e810dc871dde45d3223b0a457c54d28649b8c8334a6486eac2
154 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a redirector URL that is known to host malicious content. The document body, though heavily obfuscated, contains text related to software cracks and a URL that appears to be part of a link farm designed to attract users searching for such content. The primary malicious URL identified is ttraff.me, which likely serves as a gateway to further malicious activity.

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.me/wix?keyword=photoshop+cs5+full+crack+tinhte
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_5689eced90bd429ca9020d6800e11d52.pdf
    • https://static.usrfiles.com/ugd/b8c837_421e14b7ca234560853dc5bebd232cee.pdf
    • https://static.usrfiles.com/ugd/4dd980_1583d845589749f48d077bec7bc4da28.pdf
    • https://cdn.shopify.com/s/files/1/0438/8323/3448/files/detuwareda.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3904/files/golifupovezolataxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2004/9822/files/hestra_mittens_size_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/7946/7162/files/gefewapozowevafonav.pdf
    • https://cdn.shopify.com/s/files/1/0462/7477/3152/files/zafosewabudirumasesepet.pdf
    • https://cdn.shopify.com/s/files/1/0429/5376/9126/files/sesunelaxuxubuwabe.pdf
    • https://cdn.shopify.com/s/files/1/0432/2089/3851/files/36565053556.pdf
    • https://cdn.shopify.com/s/files/1/0434/8608/5277/files/free_firefox_older_version.pdf
    • https://cdn.shopify.com/s/files/1/0434/7920/3992/files/google_sheets_checkbox_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/mechanical_drawing_symbols_chart.pdf
    • https://cdn.shopify.com/s/files/1/0433/9128/7450/files/cities_skylines_skymods.pdf
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/fao_evapotranspiration.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/adobe_early_termination_fee.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006989.bin
d7c25b21d816b9a07a252c47e38f6785641e9b57905146175285cdec3e8f3fcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6989 5292 bytes
font_01_sfnt_off00007b82.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B82 1800 bytes
font_02_sfnt_off00008410.bin
5f67bbb4151a3403a5b55ce7586fef471a1dff313d9d8ebaa67848cf3533d149		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8410 10524 bytes

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