Malicious PDF — malware analysis report

Static analysis result for SHA-256 086714966f0a7496…

MALICIOUS

PDF

41.6 KB Created: 2020-08-29 04:42:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 37a8b209255288059f82d0649b3cc082 SHA-1: 732b15df1e8b6f578c6f03f6797e4e5698473c9f SHA-256: 086714966f0a7496263303f03bf0d13cbcde5c0f29f9f0dd7e88eb1da7549774
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document contains a link to a known malicious redirector, ttraff.com, which is disguised as a search result for 'remove partition mac'. The document also exhibits characteristics of a remote-support tool lure, suggesting an attempt to trick the user into installing or connecting to such a tool. The presence of numerous external PDF links further indicates a link farm or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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=remove+partition+mac
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_321a160ba6674138a1b9479bc20edcbe.pdf
    • https://static.usrfiles.com/ugd/b8c837_da2133d936164a218f79a8d2f4a3d882.pdf
    • https://static.usrfiles.com/ugd/b8c837_75c7f1df61fe41748cc0aea96b8d6939.pdf
    • https://static.usrfiles.com/ugd/b8c837_2221e226f0e647fa94630d322fa78eca.pdf
    • https://static.usrfiles.com/ugd/b8c837_587e896de49d4d42a7a8fb22847c1373.pdf
    • https://cdn.shopify.com/s/files/1/0429/3751/6191/files/68470763476.pdf
    • https://cdn.shopify.com/s/files/1/0437/1290/5370/files/44181549858.pdf
    • https://cdn.shopify.com/s/files/1/0430/8644/6746/files/85842327847.pdf
    • https://cdn.shopify.com/s/files/1/0431/9205/8005/files/black_s_law_dictionary_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/dofixowufifutaso.pdf
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/51591873765.pdf
    • https://cdn.shopify.com/s/files/1/0433/5045/8520/files/famalopukubuneralemod.pdf
    • https://static.usrfiles.com/ugd/b8c837_794720be077449388cd86d87b8f395c3.pdf
    • https://static.usrfiles.com/ugd/b8c837_5f4690af8743433699ead449f78db290.pdf
    • https://static.usrfiles.com/ugd/b8c837_55dcb8d9da9740ba95e7494f69c9a316.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_off000067bf.bin
7cfec7d6d28ff7d17e665377de2652a22fbf980d97130d506713833b66cff18b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67BF 4936 bytes
font_01_sfnt_off00007877.bin
141a19f7b648a248320e9f1ca3a15506ccfce1a48e4df1254ff06c6e62f76bf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7877 9800 bytes

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