Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d5fc7cab6fd580…

MALICIOUS

PDF

57.2 KB Created: 2020-09-02 07:48:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5acc8eb05e52416db103393edb5fa1b0 SHA-1: d9545e9388ccdca0a71daf58769af8de1c88ead0 SHA-256: 14d5fc7cab6fd580348b51f10b510019fb5e1bb98ae9d250efcc00ada8b0014a
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One of the primary links, 'https://ttraff.me/wix?keyword=stockholm+central+station+platform+map', is flagged as a known malicious redirector. The document's content and structure strongly indicate a phishing or malicious redirection attempt, likely delivered as a spearphishing attachment.

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=stockholm+central+station+platform+map
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9027/1642/files/simipirabi.pdf
    • https://cdn.shopify.com/s/files/1/0435/9494/0573/files/dasumejibaveduwoximoru.pdf
    • https://cdn.shopify.com/s/files/1/0429/1900/2279/files/how_to_eat_fried_worms.pdf
    • https://cdn.shopify.com/s/files/1/0432/6929/2188/files/tumbled_stone_identification.pdf
    • https://static.usrfiles.com/ugd/9fc8c3_442afed222364846a3dacbf2f5926519.pdf
    • https://static.usrfiles.com/ugd/c20ea7_4067d1c4f0b649a9b854c9db871386be.pdf
    • https://static.usrfiles.com/ugd/3cb679_2dc3d6d5f41e4d19a98596ac74de51da.pdf
    • https://static.usrfiles.com/ugd/6f53d7_d41121022f7b483aba83c3e643b22a0b.pdf
    • https://static.usrfiles.com/ugd/8a419d_1d564cc55a454deabf06b18a4d9bb25e.pdf
    • https://cdn.shopify.com/s/files/1/0431/2340/9057/files/wajafofojutalavabilozun.pdf
    • https://cdn.shopify.com/s/files/1/0432/9888/1704/files/22562445105.pdf
    • https://cdn.shopify.com/s/files/1/0434/0318/2231/files/cpsm_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0461/9108/3678/files/jaruraxatigesum.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4568/files/abbots_leigh_tune.pdf
    • https://static.usrfiles.com/ugd/b8c837_11db2222ef77485abd0fab85b8fdd4a1.pdf
    • https://static.usrfiles.com/ugd/a2d007_6d6014c737f742fb9500bc6368499800.pdf
    • https://static.usrfiles.com/ugd/2b25b5_5ddb2b7bbae941d2a27dcdbaaf177a2a.pdf
    • https://static.usrfiles.com/ugd/b50c55_864e37d2c1df4d6b9c75b0af1a71b956.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006509.bin
4a9e6b431c3b0da3cd227139212742a28514a8694fd52ab9051376cba348838c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6509 6572 bytes
font_01_sfnt_off00007b4f.bin
d658a7177ed9181681964cef54115cfd8ebf573fd3a6446d5a51ca603248e3e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4F 5424 bytes
font_02_sfnt_off00008d98.bin
03e21874a91f1c096e75ddf15cf5736ab48a6b8c4deae0f212e06ed2a3e98cdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D98 10500 bytes
font_03_sfnt_off0000b0f6.bin
a62f4cb9f231645eaa99d6e8d5150c8da81a20cf2335a0477ff5fb6c53776ee9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0F6 21252 bytes

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