Malicious PDF — malware analysis report

Static analysis result for SHA-256 93eda62058c4f5dc…

MALICIOUS

PDF

63.9 KB Created: 2020-06-20 22:24:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c506a1ab6d96c47aac8168e802a84793 SHA-1: 99c2123ac7a0075de932c2fef24f080195bc4c02 SHA-256: 93eda62058c4f5dc7e467274ed025eab260f2f1445fa9caf7e73da7840c565af
94 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier. It contains a large number of external links to various domains, forming a link farm. The primary purpose appears to be SEO manipulation or redirection to malicious content hosted on these numerous domains. The document body contains garbled text and a single embedded URL, which is part of the larger link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://fischerconsultingsolutions.com/uploads/1/3/0/4/130436242/130436242.html#manual+carburador+brosol+2e+pdf
    • http://3737ashland.com/uploads/1/3/2/6/132683087/499761.pdf
    • http://christinadusendang.com/uploads/1/3/0/5/130588703/1657955.pdf
    • http://safetradecars.com/uploads/1/3/0/7/130775519/9cae7009ddfa4.pdf
    • http://bentanimalshelter.com/uploads/1/3/0/5/130543106/nujijujekovune.pdf
    • http://justtravelhappy.voyagerwebsites.com/uploads/1/3/1/4/131437237/5116124.pdf
    • http://vyktoriafinancialservicesllc.net/uploads/1/3/0/8/130814681/xuvigozopu.pdf
    • http://acuity-cre.com/uploads/1/3/0/6/130639087/436638.pdf
    • http://chrisscontrols.com/uploads/1/3/0/2/130270936/fifixezigemu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae00.bin
e000d78bb6d273e1a3a9967159d7c4c57c50de0e1e3731db8317090d66a2763e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE00 1728 bytes
font_01_sfnt_off0000b664.bin
d2bde5ba3b0a331fab79386d54e7affd14ac7e78f19fcf9668c731fea8698751		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB664 5180 bytes
font_02_sfnt_off0000c800.bin
70c82499cdc6a66f143bd299c79ffe77865d1199687578bf4eb9f9907b5a89f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC800 13948 bytes

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