Malicious PDF — malware analysis report

Static analysis result for SHA-256 889d7ba29237382d…

MALICIOUS

PDF

39.6 KB Created: 2020-05-14 02:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 110d43e0df97cd19064a7bdc803617e6 SHA-1: 6893a3af77171b7d059f8b36aba4c6de1e1a4989 SHA-256: 889d7ba29237382d36fe17159bf408d7c29ebf2f90d9f682f11b051e9e394e09
94 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The embedded document body also contains a URL, suggesting the primary purpose is to redirect users to these external resources. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this file. No scripts were extracted from this sample.

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://wavers.org/uploads/1/3/0/6/130620176/130620176.html#uc+browser+apk++old+version+uptodown
    • http://premiumcoffeedelivered.com/uploads/1/3/0/6/130639734/sedalujepolunenugufi.pdf
    • http://chesannaphil-2020.com/uploads/1/3/0/8/130873794/eaf21f15a2cb82.pdf
    • http://viztac.com/uploads/1/3/1/0/131069987/jetukozepu.pdf
    • http://saintkateriparish-scv.org/uploads/1/3/0/6/130603926/4692199.pdf
    • http://dealsperfectbuys.xyz/uploads/1/3/0/8/130874091/5467196.pdf
    • http://atlantaluxpools.com/uploads/1/3/1/4/131452963/gopefenafibibeb.pdf
    • http://elkhartmovingandstorage.net/uploads/1/3/0/5/130590589/taxife_takono_nufobep_fonomarenuli.pdf
    • http://essentialspaceplanning.com/uploads/1/3/1/8/131857513/kipetodumo.pdf
    • http://cannasbestdepot.com/uploads/1/3/0/5/130544313/kitanosopekem.pdf
    • http://finaleagency.com/uploads/1/3/0/7/130740429/cd9f183e438c7b5.pdf
    • http://kingswordinc.net/uploads/1/3/0/9/130969496/1732507.pdf
    • http://accleaningservices.net/uploads/1/3/0/6/130604067/6c7bc.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_off00005b07.bin
0496bd28773fe886a542eae0af1c6859ffc30c5ff8a590f1cf828b7afadcb408		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B07 10368 bytes
font_01_sfnt_off00007e56.bin
c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E56 16092 bytes

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