Malicious PDF — malware analysis report

Static analysis result for SHA-256 02946b886c1cf9bf…

MALICIOUS

PDF

47.7 KB Created: 2020-08-30 01:32:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de111d2f7c1c0b5a3fb5342aadea7320 SHA-1: 38bf6f26f72273ce424c98487591c6ac1fd8fe8f SHA-256: 02946b886c1cf9bf67497257342efe98e25b136287f9b3fab774cb587d8fffac
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link to a known malicious redirector, ttraff.com, which is disguised as a search result for vintage audio equipment. This suggests a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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=marantz+vintage+receiver+restoration
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/b8c837_756280f7b4e343b4939720676291bbec.pdf
    • https://static.usrfiles.com/ugd/b8c837_04ba36cb25b14989b3ddd3fe3d2cb6fb.pdf
    • https://static.usrfiles.com/ugd/d94ae5_8dd6f895100e4b1ea9ff76d2af02b6ac.pdf
    • https://static.usrfiles.com/ugd/b8c837_070ce2bf6836403db4bed0a752beced0.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdba102466e944d28201341681839255.pdf
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/bewavudupajuruf.pdf
    • https://cdn.shopify.com/s/files/1/0435/0754/8326/files/minecraft_pe_download_aptoide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67572949107.pdf
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/dixugiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bodadajigewodozisidezufe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/limumovarone.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/crab_pot_stardew_valley.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/tudeluwelulataguxizobi.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_off00006aa3.bin
5463c29a893699824525b97ee1c22ad04791a3a273f4481a1be583f90d8d45f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA3 4836 bytes
font_01_sfnt_off00007b2c.bin
5114d2ad2a683a02056b332997b3265fd446c59b94a973bff62cb148d43d36e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2C 12416 bytes
font_02_sfnt_off0000a379.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0xA379 4324 bytes