Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fc1ec2609c88132…

MALICIOUS

PDF

59.4 KB Created: 2020-04-21 16:42:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d7a959568ed83154d81c4b43f596f268 SHA-1: a04bf4f3c6e97bd75f4793e30f420b432ee60039 SHA-256: 3fc1ec2609c881328bce98a1ed59fc096f7d758cd1485d7748762a37df28f3e1
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The primary URL http://ethridgeheatingcooling.com/uploads/1/3/0/5/130589145/130589145.html#wwe+bleacher+report+nxt+takeover appears to be a lure. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and contains embedded URLs, suggesting a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ethridgeheatingcooling.com/uploads/1/3/0/5/130589145/130589145.html#wwe+bleacher+report+nxt+takeover
    • http://jenpengellyportfolio.com/uploads/1/3/1/4/131438234/bemevozusinup.pdf
    • http://redribbonstaging.com/uploads/1/3/0/7/130740218/392801.pdf
    • http://colvigconsulting.com/uploads/1/3/1/3/131397955/1c432.pdf
    • http://kingartsy.com/uploads/1/3/0/7/130776405/922f1.pdf
    • http://edspeakers.com/uploads/1/3/1/6/131637595/tumefi.pdf
    • http://paulbutlerusa.com/uploads/1/3/1/4/131438876/sidigujekalufirad.pdf
    • http://justbreathespa.ca/uploads/1/3/0/5/130551618/fizug.pdf
    • http://hewittmft.com/uploads/1/3/0/5/130543210/bobikovux.pdf
    • http://sideglide.com/uploads/1/3/0/8/130874240/kusetorepusevurefovu.pdf
    • http://facileglutenfree.it/uploads/1/3/0/7/130776819/639bc89d289ae7f.pdf
    • http://motherblessing.info/uploads/1/3/1/4/131406361/8659858.pdf
    • http://alittlehighlittlelow.com/uploads/1/3/0/4/130435803/4383557.pdf
    • http://kypropertyventureinvestmentllc.com/uploads/1/3/0/5/130539130/4962129.pdf
    • http://mervinsorganics.com/uploads/1/3/0/8/130814311/zezaxobekaz.pdf
    • http://facileglutenfree.it/uploads/1/3/0/7/130776819/639bc89d289ae7f
    • 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_off00007d75.bin
5f3cd9ec388476ca015618396c7b988211577a219eee4d31182800b8ca10383d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D75 9164 bytes
font_01_sfnt_off00009f3e.bin
7863b829de04ea8b7f5be4d5dae43fa62182e7611f0c3a300d10b316d27db496		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F3E 2732 bytes
font_02_sfnt_off0000a8eb.bin
b4b26587514cec31f1e9d3b4ce736c10093b468ebdf574b022c92b3514cfc837		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8EB 10040 bytes
font_03_sfnt_off0000c677.bin
885dd9266be5078e647fd2ab59782063214ab49c3ac4450635e799e37fd104ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC677 17712 bytes

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