Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc9b3d6e7dc36016…

MALICIOUS

PDF

53.8 KB Created: 2020-08-01 06:29:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e728dc9df904a4ad60558a38d2ae8c56 SHA-1: 988c161313690ec08e1707e870df45c39c9245c4 SHA-256: fc9b3d6e7dc36016e6bf7702a2b4c7256431a186d73900a4e66a5d75ab7c21b4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, including a critical redirector link to traff.com, disguised as a Merriam-Webster dictionary lookup. This suggests a phishing or malware distribution attempt. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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=merriam+webster+dictionary+pdf
    • http://files.dporganizing.com/uploads/1/3/0/7/130776058/37e1b3fdc7303a.pdf
    • http://files.gracebaptisthartsville.com/uploads/1/3/0/8/130813757/4363511.pdf
    • http://files.ancienthand.net/uploads/1/3/0/9/130969154/720931.pdf
    • http://files.onestepforwardinspirations.com/uploads/1/3/0/9/130969354/bebanutoluwile.pdf
    • http://files.professorwillis.com/uploads/1/3/0/9/130969819/3536095.pdf
    • https://cdn.shopify.com/s/files/1/0431/1701/9292/files/79245974051.pdf
    • https://cdn.shopify.com/s/files/1/0434/1740/3559/files/worikag.pdf
    • https://cdn.shopify.com/s/files/1/0440/7263/2470/files/36629174000.pdf
    • https://cdn.shopify.com/s/files/1/0430/6875/2023/files/fukilapokifajanasago.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdf
    • https://cdn.shopify.com/s/files/1/0431/8576/6561/files/49340052242.pdf
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/didokulaligupewa.pdf
    • https://cdn.shopify.com/s/files/1/0434/0465/6797/files/regile.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/befevavusaxigo.pdf
    • https://cdn.shopify.com/s/files/1/0434/9424/4516/files/wizajiliri.pdf
    • https://cdn.shopify.com/s/files/1/0432/8944/4510/files/36500305520.pdf
    • https://cdn.shopify.com/s/files/1/0441/2915/7272/files/xovikipe.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bdb.bin
f526360ad1048b9bc41e76f474b78ce3c70f5ae79a64aa8ba12a812ac25f5985		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDB 5396 bytes
font_01_sfnt_off00007e28.bin
4fcab9e8c71f1c6c4eea867ea504f64133249f52e1e11232eee75046bbf26d83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E28 11504 bytes
font_02_sfnt_off0000a3fc.bin
cac148788f3bfa1bf0c404b5350c0549ab072eca5b07f651a878590cac4b605c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3FC 16820 bytes
font_03_sfnt_off0000baed.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAED 4324 bytes

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