Malicious PDF — malware analysis report

Static analysis result for SHA-256 62a716a00785c5d5…

MALICIOUS

PDF

55.9 KB Created: 2020-04-22 00:59:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3016e16217e2487e779231feeba6e5c3 SHA-1: 4830e45f0151f46992d1ae79e1f93376ce5d6004 SHA-256: 62a716a00785c5d5df566d8632c85ae2622473b58be38373a404c4447bec8ed4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to similarly structured URLs, suggesting a link farm or SEO abuse tactic. One of the embedded URLs, http://caesarsnewyork.com/uploads/1/3/0/8/130815093/130815093.html#events+website+template+themeforest, is presented as a template for events, likely a lure to direct users to a malicious website. No scripts were extracted, but the ML classifier strongly indicates malicious intent.

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://caesarsnewyork.com/uploads/1/3/0/8/130815093/130815093.html#events+website+template+themeforest
    • http://blackmagicfriesians.com/uploads/1/3/1/3/131383594/mumozirewi.pdf
    • http://stfrancisgiftsllc.com/uploads/1/3/0/3/130313107/xemajogez.pdf
    • http://smidemo.org/uploads/1/3/0/6/130605516/purusozenut_rifilup_zoxop_riwevafewo.pdf
    • http://modasanmicheli.com/uploads/1/3/0/6/130620622/7bfc0086b9.pdf
    • http://brandinfrancisosborne.com/uploads/1/3/0/8/130874615/wovawasip.pdf
    • http://coxcpa.net/uploads/1/3/0/6/130621527/walemu.pdf
    • http://hairbyaliciameylan.com/uploads/1/3/0/5/130539584/9805425.pdf
    • http://wealthsecretonline.com/uploads/1/3/1/4/131407164/gijuget_rexulanokogug_gaxuf.pdf
    • http://byronestates.com/uploads/1/3/1/3/131378972/e6b2a0a5287427.pdf
    • http://jbraun4indy.com/uploads/1/3/0/6/130603744/xovagonefun.pdf
    • http://eldermoonschool.net/uploads/1/3/0/3/130379051/runavud.pdf
    • http://c-bd.com/uploads/1/3/1/3/131379498/relusa.pdf
    • http://bim-plicity.com/uploads/1/3/1/4/131406343/29e22bd2e6.pdf
    • http://georginariel2018.com/uploads/1/3/1/3/131384115/zodutele.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_off0000b250.bin
fe53ee42e2d6ad5f6e6fb48e585de87c2e62e0a73f72b231af11c9678a26f950		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB250 8620 bytes

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