Malicious PDF — malware analysis report

Static analysis result for SHA-256 897efa78bfffaacb…

MALICIOUS

PDF

49.4 KB Created: 2020-04-22 17:15:16 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 13278756344e3318b4603bfdc703656a SHA-1: 45242d3370360fa977224004a8439281878038d4 SHA-256: 897efa78bfffaacb32908f42376bdddea87db009aad4301359bea5f0682e2b8c
94 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to PDF files hosted on similar domains. The ML classifier strongly indicated maliciousness. The primary lure appears to be a document template, with embedded links directing the user to potentially malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://uni-vation.com/uploads/1/3/1/4/131407365/131407365.html#agenda+word+document+template
    • http://hommagenutrition.com/uploads/1/3/0/3/130379164/2478460.pdf
    • http://drahmadsleep.com/uploads/1/3/0/7/130775150/renegulelode.pdf
    • http://meandmecosmetics.com/uploads/1/3/0/3/130313098/8878842.pdf
    • http://net-media-fokus.de/uploads/1/3/1/4/131452869/3920559.pdf
    • http://hiddenkindness.org/uploads/1/3/0/5/130543402/xipabokozavene_beposoteseju_tivadewaderosug_kapatut.pdf
    • http://luigiragone.com/uploads/1/3/0/9/130970004/bitaligoxibom-sisuvaf-fiseluv-saxili.pdf
    • http://memorialstoles.com/uploads/1/3/0/7/130775587/repujizobilesi-nivolizuwisif-xulur-takabotitel.pdf
    • http://lornasartandcraft.com/uploads/1/3/0/7/130740563/aa72d038cab.pdf
    • http://integrityarchitecturalsolutions.com/uploads/1/3/0/3/130313634/b3bc5a9ba2754cd.pdf
    • http://longevityhardwoodflooring.com/uploads/1/3/0/5/130589312/nivasabomofufodabede.pdf
    • http://montedarocha.com/uploads/1/3/0/5/130543285/d78489b18.pdf
    • http://wovenrootslearning.com/uploads/1/3/1/4/131438477/9540850.pdf
    • http://craigsthornton.com/uploads/1/3/0/6/130621190/nagivaniz.pdf
    • http://hicfmsp.org/uploads/1/3/0/6/130620853/c9f72faffab0.pdf
    • http://israelarmsllc.net/uploads/1/3/0/5/130589090/9491897.pdf
    • http://wovenrootslearning.c
    • 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_off0000866e.bin
33d35f8970b10a53ba7bbd7d29d8913ba9354e051fd3e613501f9986ebadee3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x866E 9000 bytes
font_01_sfnt_off00009852.bin
57997535211f2bb6d5492e539fd4d79f69d32d2d017aa424439dc20948c16fd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9852 8412 bytes

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