Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f6f794ad88374ce…

MALICIOUS

PDF

42.8 KB Created: 2020-09-02 04:02:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab882e644b0822a6f9ed862c0ed3bb62 SHA-1: 88d1c6028bd43bf44ee7d16274b3e808fe4db3a0 SHA-256: 7f6f794ad88374cef51841c0c5a683ea3fc9f07737f137f9d5a8e1aa5ec71cc9
154 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The embedded URL, https://ttraff.link/wix?keyword=set-+builder+notation+examples+and+answers, is a primary indicator of this malicious intent. While no scripts were extracted, the document's structure and embedded links strongly suggest a phishing or 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.link/wix?keyword=set-+builder+notation+examples+and+answers
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/8209/6535/files/possessivpronomen_bungen.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6083/files/kipivubijexuferososigibos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26450106566.pdf
    • https://static.usrfiles.com/ugd/8b2c09_0cb6f2e0806f4f548e0f7a1a9a5d02a0.pdf
    • https://static.usrfiles.com/ugd/b8c837_7fa031943cc14e4887eb4feb4f9d60d0.pdf
    • https://static.usrfiles.com/ugd/b8c837_f218264edc8349bebdb67d6bf3c6ba3e.pdf
    • https://static.usrfiles.com/ugd/b8c837_62609fc3d8e44fb5af0221e5eaf5e002.pdf
    • https://static.usrfiles.com/ugd/b8c837_c7cd55585e554314b7a15843aa122d0f.pdf
    • https://static.usrfiles.com/ugd/13ae68_2e19b55b9bfb4c6f80f9cd164c352967.pdf
    • https://static.usrfiles.com/ugd/b80405_9b2a5eace149406d8018507ac33dfdbd.pdf
    • https://static.usrfiles.com/ugd/2b25e8_c867478a0cc04c089a7915deb027be4d.pdf
    • https://static.usrfiles.com/ugd/29c71c_776ba108f6d247a5982c083a9a103dc7.pdf
    • https://static.usrfiles.com/ugd/954c8b_b576eeb2152d4c018563292274ac42e5.pdf
    • https://static.usrfiles.com/ugd/3fc21f_2bcdfe1f0e274e4d8d0223c515d51a4b.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_off00005b2d.bin
9870f49c5de21829cabdec1fa21fbba47b40147e8e65ec440bf3d73817d9139d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2D 5424 bytes
font_01_sfnt_off00006d87.bin
4bc7fef2c08d547929a29b0a578d9dcf189bab2797d14cc938fa44bb90877158		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D87 10188 bytes
font_02_sfnt_off00009019.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9019 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.