Malicious PDF — malware analysis report

Static analysis result for SHA-256 892da650145f23d1…

MALICIOUS

PDF

43.0 KB Created: 2020-03-25 04:45:47 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d7a640e082cd9e4c11e642491e4a5b51 SHA-1: 6da1e2ec3b1a83fc04e8c41f7d218b062b3222e1 SHA-256: 892da650145f23d1e73d6c71bcc48e79d41eef6bfddac8c483f56a1d0c4ae067
94 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains a URL that points to a Spanish-language document, suggesting a lure. The primary intent appears to be directing users to a vast network of linked PDFs hosted on numerous domains, likely for SEO spam or to distribute further malicious content. The ML classifier strongly supports the malicious verdict.

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://artdubois.ca/uploads/1/3/0/5/130551287/130551287.html#ensayo+sobre+la+politica+en+el+peru
    • http://mylenebaxterconsulting.com/uploads/1/3/0/2/130270776/barazuwojoz.pdf
    • http://www.alexanderjdee.com/uploads/1/3/0/5/130588162/pugakoxekuvuse.pdf
    • http://www.timothyandluisa.com/uploads/1/3/0/3/130324420/zulanez-keregad-bajariwagibonup.pdf
    • http://artdepartment.site/uploads/1/3/0/4/130483741/4c69bbe6623.pdf
    • http://positiveimpact4careers.com/uploads/1/3/0/6/130604856/3310852.pdf
    • http://mygrapevinechiropractic.com/uploads/1/3/0/4/130477287/kepipa.pdf
    • http://dimeto.com/uploads/1/3/0/6/130621196/xedilanokerame.pdf
    • http://epiphanyweddingsandevents.net/uploads/1/3/0/5/130588633/267453.pdf
    • http://helloipx.com/uploads/1/3/0/5/130589094/puwarepiwivivemo.pdf
    • http://www.development.friendsofadvantage.org/uploads/1/3/0/8/130874266/4406334.pdf
    • http://menoffrederickdouglassmastery.com/uploads/1/3/0/8/130814830/595a9f181.pdf
    • http://thetowerdistrict.com/uploads/1/3/0/2/130272296/4232223.pdf
    • http://jxkmanagement.com/uploads/1/3/0/3/130323156/judibatiw.pdf
    • http://surecellcalidad.com/uploads/1/3/0/4/130476471/7739978.pdf
    • http://educatemotivatetrain.com/uploads/1/3/0/7/130739021/lafiwu.pdf
    • http://muggmatch.com/uploads/1/3/0/4/130476700/mixagenixasixu.pdf
    • http://reshafe.com/uploads/1/3/0/5/130543757/8519711.pdf
    • http://tandhatletics.com/uploads/1/3/0/7/130740480/vupudetivapul.pdf
    • http://www.jazzsourcing.com/uploads/1/3/0/2/130288444/wejipuge.pdf
    • http://pikespeakseniors.org/uploads/1/3/0/5/130589450/jiwelamumuse.pdf
    • http://readyforretirement.net/uploads/1/3/0/4/130488270/913a66c4b5.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007dd0.bin
827887a544187bbac8c02673e7a89f588985227a768eeed164eeb4b6afd39613		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD0 8648 bytes

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