Malicious PDF — malware analysis report

Static analysis result for SHA-256 46285a18b5ea70c8…

MALICIOUS

PDF

41.1 KB Created: 2020-08-30 11:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e627604088a09d12cf62cadb0ea79412 SHA-1: 0d1117e4e5edea61692c48fbf45e1e616c98c8cf SHA-256: 46285a18b5ea70c879fcb0b161653e6178da7825495d9eade27995ca6c641f92
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a malicious redirector link disguised as a vehicle sales attestation. The primary heuristic indicates a PDF malicious redirector link pointing to 'ttraff.ru'. Additionally, the document body contains obfuscated text and the malicious URL, suggesting a phishing or social engineering attempt to redirect the user to a harmful site. No scripts were extracted from this sample.

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.ru/wix?keyword=attestation+de+vente+d%2527+un+v%25C3%25A9hicule
    • https://static.usrfiles.com/ugd/b8c837_cb1be8df13dc474bb49d0cb1c3b8ed82.pdf
    • https://static.usrfiles.com/ugd/5899d5_0ff7e46ce73244558872540147f6e560.pdf
    • https://static.usrfiles.com/ugd/b8c837_01d9be52db3f48eb85dce203f68a2ad5.pdf
    • https://static.usrfiles.com/ugd/b8c837_0509c4930e4f42fbb07dcd56a78f5ac6.pdf
    • https://static.usrfiles.com/ugd/b8c837_efdf07196f7542e7bbee4b81f1efb6f8.pdf
    • https://static.usrfiles.com/ugd/97493d_a8ebba2f5f96479b9e7dd99e2f9868d0.pdf
    • https://static.usrfiles.com/ugd/cc14e4_c641e79868ad4f17a5182894497b7c40.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_3b511328c1d3438ba39aeadd619d96ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_6095cd605a4b43bca7bb6f59728d8c0f.pdf
    • https://static.usrfiles.com/ugd/286fb8_b462f59f0d344b78bc04a8d8568e800e.pdf
    • https://static.usrfiles.com/ugd/0c8cc8_140e23f5748f4486adca0d32c8ca938d.pdf
    • https://cdn.shopify.com/s/files/1/0429/1595/4847/files/4480156104.pdf
    • https://cdn.shopify.com/s/files/1/0441/2496/2968/files/aha_dietary_guidelines_revision_2000.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9236/files/20158952553.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/77152854656.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060cc.bin
80dd19b824fa5e469c8fa15d31ff5a81bd623493c01e795cea8050309fcac76e
pdf-font-stream PDF embedded font (sfnt) at offset 0x60CC 5156 bytes
font_01_sfnt_off00007216.bin
32d2109b44e6b216c635ef1738d9367df687ec1cbce11cb7595b225abb0056c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7216 10952 bytes