Malicious PDF — malware analysis report

Static analysis result for SHA-256 60a99e5b533a6723…

MALICIOUS

PDF

57.9 KB Created: 2020-05-05 23:44:48 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ca160490e0046dd8cbe8fd48c81696ec SHA-1: 1793a4e013848bdf181fa9af64b74a1d9a8ecbf8 SHA-256: 60a99e5b533a67232638f6fc7e8d212c773dc094d3ff514eff674c2e79699c7c
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'Actions photoshop free cs6' and embeds a large number of external links, many of which point to other PDF files. The primary embedded URL, http://freedomballoonfestival.com/uploads/1/3/0/6/130620808/130620808.html#actions+photoshop+free++cs6, suggests a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of 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://freedomballoonfestival.com/uploads/1/3/0/6/130620808/130620808.html#actions+photoshop+free++cs6
    • http://alllifeispreciouspodcast.com/uploads/1/3/0/6/130639459/49177d.pdf
    • http://gwendesignsit.com/uploads/1/3/1/4/131438639/9011546.pdf
    • http://druefit.com/uploads/1/3/1/3/131379384/2389008.pdf
    • http://edentheband.net/uploads/1/3/0/6/130604778/1524170.pdf
    • http://hayagroupinc.com/uploads/1/3/1/4/131413275/2f1f8a6dd864807.pdf
    • http://raypawn.com/uploads/1/3/0/4/130478868/famanexu.pdf
    • http://easycoaching123.com/uploads/1/3/0/5/130542964/8929420.pdf
    • http://huckleberriesartisanpastries.com/uploads/1/3/0/2/130271205/detobebukog-veduv.pdf
    • http://mrjohnsonelcap.com/uploads/1/3/0/6/130621359/fbd4e72bf7585.pdf
    • http://wearmysample.com/uploads/1/3/0/5/130551534/fd6f6b4c93c9814.pdf
    • http://theafricankidsnetwork.org/uploads/1/3/0/8/130814245/jonefavodib.pdf
    • http://instrumentsonplanes.com/uploads/1/3/0/8/130874164/tumelirojubibod.pdf
    • http://baiottolaw.com/uploads/1/3/0/5/130538842/7361450.pdf
    • http://streetstylemotorsport.com/uploads/1/3/1/0/131070776/3e76c418361.pdf
    • http://nhgamebutcher.com/uploads/1/3/0/4/130489157/xubisafirig.pdf
    • http://shs-wuppertal.org/uploads/1/3/0/8/130813999/387e615c1eaa.pdf
    • http://karoliine.com/uploads/1/3/0/6/130639083/8789302.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b831.bin
c451d9d758d5e4782cd1bd84ff52f00e927c6bc458a6ea987c7abb8ffb372b65		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB831 10748 bytes

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