Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ad63f7023642ae6…

MALICIOUS

PDF

44.0 KB Created: 2020-09-06 08:31:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc92970a12962c6ac9c5c8289f88f2d3 SHA-1: 3c243ee1630a48f27e96aecf1a5180246ba00f51 SHA-256: 4ad63f7023642ae6d0a811c5aef5fd930fde80b508dc7717f485886c5ca3177b
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a known malicious redirector. The ML classifier strongly indicated maliciousness. The primary malicious URL is https://ttraff.me/wix?keyword=json+boolean+format, which likely serves as a lure to a phishing or malware distribution site. The document body itself is heavily obfuscated but contains the malicious URL and references to other PDFs hosted on benign-looking domains, suggesting a link farm or redirection tactic.

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.me/wix?keyword=json+boolean+format
    • https://static.usrfiles.com/ugd/0f1814_3373b2880e35437e9f11d6935b6f96e7.pdf
    • https://static.usrfiles.com/ugd/9dda13_b7df7bce4e854f52bc0e0092bee2cd4c.pdf
    • https://static.usrfiles.com/ugd/fd3290_a781a847d9d5442fa24bda7e3f458a80.pdf
    • https://cdn.shopify.com/s/files/1/0434/7520/6294/files/dazepoduvibixixumalu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7533/8389/files/animation_video_maker_app.pdf
    • https://cdn.shopify.com/s/files/1/0464/6921/8454/files/zetomupadonalipuxow.pdf
    • https://cdn.shopify.com/s/files/1/0434/3139/5493/files/zogutotafopofupivumopivax.pdf
    • https://cdn.shopify.com/s/files/1/0434/7474/7558/files/future_simple_future_continuous_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/1263/6322/files/xilafilep.pdf
    • https://cdn.shopify.com/s/files/1/0450/1169/7814/files/farikemilaresam.pdf
    • https://cdn.shopify.com/s/files/1/0428/2230/3911/files/cyberpower_750va_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6050/files/libro_centrales_electricas.pdf
    • https://static.usrfiles.com/ugd/5be868_fdcbe1aea9f5460899075c7fbf976269.pdf
    • https://static.usrfiles.com/ugd/299074_32b0dd013a9b4d03a0117221e04f6bf4.pdf
    • https://static.usrfiles.com/ugd/f4de5e_0fe818c6a16e409e8689db222b22b0c8.pdf
    • https://static.usrfiles.com/ugd/c0b427_6c73c6536931456c862a84656b57c10c.pdf
    • https://static.usrfiles.com/ugd/4479ed_e70b44ee31714e1683f42079ca271b22.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_off000064d7.bin
ec65164307d0f114110b725e5a8f360d1a9d3e9b26f50adf88b6ad17ce907dd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D7 5040 bytes
font_01_sfnt_off000075e9.bin
d9f90d296992f624183353c92441d6a99c276ca481154397b5c0015c5e925e4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E9 14780 bytes

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