Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec40ac736d3509b…

MALICIOUS

PDF

47.1 KB Created: 2020-04-18 21:59:13 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1432ca558c0ca22ee071b801106db44f SHA-1: 4fc91945086ff0f020cf9f35bd73ab742e69b82e SHA-256: 7ec40ac736d3509b3f664912afa86c8fc38773a2a2444fca8cfaf951da341dc2
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 are hosted on similar domains and use numeric or book-related slugs, indicating a link farm or SEO spam tactic. The primary lure appears to be related to 'Android games emulator for nokia n8', directing users to a specific HTML page. The ML classifier strongly flagged this PDF as malicious.

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://iweargreatness.com/uploads/1/3/1/4/131453086/131453086.html#android+games+emulator+for+nokia+n8
    • http://write-move.com/uploads/1/3/1/3/131380788/katepezu.pdf
    • http://pngtings.com/uploads/1/3/0/3/130313398/zuzoripovitase.pdf
    • http://deluxedesignbuild.net/uploads/1/3/0/5/130589202/mogesobuxa.pdf
    • http://inklinkbeta.com/uploads/1/3/0/2/130289308/7e698f29.pdf
    • http://brtennisexperience.com/uploads/1/3/0/5/130550858/6586221.pdf
    • http://somassociates.com/uploads/1/3/0/7/130738578/badavafijenira.pdf
    • http://meticulousmoments.com/uploads/1/3/0/7/130775705/c4b9d99ee80.pdf
    • http://pilotec.co/uploads/1/3/1/0/131070841/e49417.pdf
    • http://retirementrelo.com/uploads/1/3/0/5/130551433/pevulavisasufotov.pdf
    • http://ouachitariverchallenge.com/uploads/1/3/1/4/131483065/posum_juwowipotolo.pdf
    • http://burned4you.com/uploads/1/3/0/6/130639534/1509517.pdf
    • http://fullforcewash.com/uploads/1/3/1/3/131380404/pabelavoluxinewo.pdf
    • http://kyrr.org/uploads/1/3/1/4/131406234/mivegapo_kakufenawa_dufawizebonuke_wonal.pdf
    • http://integritycremations.org/uploads/1/3/1/3/131398140/dea213b1.pdf
    • http://wreckline.com/uploads/1/3/0/7/130775537/909e282cab.pdf
    • http://fullforcewash.com/uploads/1/3/1/3/131380404/pabelavoluxinewo
    • 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_off00008ffb.bin
a44a65347cc98dac524d7fbf1c676b4fedc989da28204b52c25c0bd5e3e47836		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FFB 8264 bytes

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