Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e9a58160a4ae686…

MALICIOUS

PDF

63.3 KB Created: 2020-03-12 08:04:49 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 61bd24963a1b1f1089c709602a7d8be2 SHA-1: 41167caa1360152a7c208f7f61c4228c01590cee SHA-256: 7e9a58160a4ae6867ea98774a4d0f8ff6bd0e6a8601e82ed1583b60b2639e07e
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a malicious intent to redirect users. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the link farm point towards a phishing or content-luring attack, likely initiated via a spearphishing attachment.

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://iotaphilambdanorfolk.gammaxiques.org/uploads/1/3/0/3/130379285/130379285.html#pantoea+agglomerans+pronunciation PDF link annotation
    • http://nicole-pellegrino.com/uploads/1/3/0/3/130313157/giluwug_kewewofezuz_tabof_fuwol.pdfIn PDF document text
    • http://www.sylvanheightscondos.org/uploads/1/3/0/6/130640021/4432360.pdfIn PDF document text
    • http://shadowbendtest4.com/uploads/1/3/0/6/130620309/gosofalaruzonu.pdfIn PDF document text
    • http://dianakingsley.us/uploads/1/3/0/6/130605108/3538999.pdfIn PDF document text
    • http://em-weddings.net/uploads/1/3/0/2/130272977/nebaweje.pdfIn PDF document text
    • http://tastysoutherndelightllc.com/uploads/1/3/0/4/130490386/c4aff9118d991c4.pdfIn PDF document text
    • http://johnks.net/uploads/1/3/0/7/130739119/6448fa64637c.pdfIn PDF document text
    • http://azurdeplacements.fr/uploads/1/3/0/7/130739530/5088751.pdfIn PDF document text
    • http://johnbedel.com/uploads/1/3/0/9/130969818/vulix_witefisokide_lazotizuko_bejenudegakedi.pdfIn PDF document text
    • http://www.okaycitizen.org/uploads/1/3/0/6/130621439/foxujalok-fanawapilekep-fazikogi-taxozevojo.pdfIn PDF document text
    • http://hostmaster.oxum.ch/uploads/1/3/0/7/130740258/fugisubosisare-wajotisiriludub.pdfIn PDF document text
    • http://www.abbolution.com/uploads/1/3/0/8/130814652/kexiwudezofibusi.pdfIn PDF document text
    • http://webmail.escoria.com.ar/uploads/1/3/0/7/130739772/8246735.pdfIn PDF document text
    • http://www.g3bcn.com/uploads/1/3/0/4/130479044/wojebesomitepekozosi.pdfIn PDF document text
    • http://monsieurpl.com/uploads/1/3/0/6/130639409/d7df160f9e.pdfIn PDF document text
    • http://hostmaster.vikisimpson.com/uploads/1/3/0/6/130620667/nezanabavikuve-torif-porabepurivet.pdfIn PDF document text
    • http://christmindcoaching.com/uploads/1/3/0/3/130313024/cc6201.pdfIn PDF document text
    • http://www.vancouverepoxyflooring.com/uploads/1/3/0/6/130604117/mogixijujax-vebokidufofeme-zajutulu-sobasoregi.pdfIn PDF document text
    • http://doublebideuchre.org/uploads/1/3/0/4/130483184/mawuvusadeju-kelepefamazuba.pdfIn PDF document text
    • http://www.nasimofoods.com/uploads/1/3/0/5/130589050/nomidudotumiw.pdfIn PDF document text
    • http://maviefinanciere.com/uploads/1/3/0/7/130740019/d988aa95a.pdfIn PDF document text
    • http://sonyakrakoff.com/uploads/1/3/0/5/130543280/sezepaben.pdfIn PDF document text
    • http://hallmarktransportation.com/uploads/1/3/0/3/130323315/1917185.pdfIn PDF document text
    • http://gettothetopofyourjungle.com/uploads/1/3/1/1/131163879/jibuxuterikosas.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b6b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6B1 10188 bytes
SHA-256: 00d91624f31750e389548ce64f44331427c8217d3c1acc7988a700188040f415
font_01_sfnt_off0000d909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD909 16204 bytes
SHA-256: f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d

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