Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e166815f83219e…

MALICIOUS

PDF

47.2 KB Created: 2020-08-31 20:56:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de36ab1a703caec111e348d0de8e5f3d SHA-1: 5fd2d0c434969d068b9656e434e262d7efc2b2b1 SHA-256: d2e166815f83219e5a491e32adcd2555aaf5afae392ae0f322cea44e8631e4e3
154 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to a known malicious redirector, ttraff.com. The document body, though partially corrupted, suggests a lure related to a "Kreg jig setup guide". The presence of a PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing and the ML_NYX_PDF_MALICIOUS flag strongly indicate malicious intent. The primary IOC is the redirector URL, which is likely used to funnel victims to further stages of the attack.

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/pify?keyword=kreg+jig+setup+guide
    • https://static.usrfiles.com/ugd/2274a7_bc91b7e088124d63ac488e72fe69a7aa.pdf
    • https://static.usrfiles.com/ugd/3cb679_24a6707fc62d485490c8433079efb6c6.pdf
    • https://static.usrfiles.com/ugd/b91566_fb930c1d34714b84938442d70d6a0711.pdf
    • https://static.usrfiles.com/ugd/accd1f_02598bda8a3e43de9e254db5e5d15aa2.pdf
    • https://static.usrfiles.com/ugd/b8c837_d848dcfe411946d194bb6a3471ffe9de.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/nezabawemokunulisoxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/bilidel.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16711599054.pdf
    • https://cdn.shopify.com/s/files/1/0432/4222/5831/files/mawupumifemisogekolekuwom.pdf
    • https://cdn.shopify.com/s/files/1/0429/2437/6227/files/deming_vs_juran.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_off00007cf1.bin
9b14c25be72c601144f05ec15dfcecc19cf27f49f62a42daa3da1848dc3e0f40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF1 4932 bytes
font_01_sfnt_off00008dda.bin
6961ffdd81df000f9c8570abc84b2e91ecb4e5d2a9d76e181a6892ca34d5162f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDA 10180 bytes

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