Malicious PDF — malware analysis report

Static analysis result for SHA-256 51e01e597550a1cb…

MALICIOUS

PDF

40.8 KB Created: 2020-03-09 10:40:08 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 3f71f5df1d3d09eb4d63e1b08d993d4c SHA-1: 8e7da7f7355dc305d2b309981e8e73ca08b2b83d SHA-256: 51e01e597550a1cb1ea56247494bbc536b777c0abe07d6e67359ebd3be49d4ee
96 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a common technique for SEO poisoning or phishing. The document body, though heavily obfuscated, contains references to 'Vte chest guidelines' and includes multiple URLs pointing to domains that host PDF files with numeric or generic slugs, suggesting a link farm or content-scraping operation. No scripts were extracted from this sample.

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://ga65q.slpny.com/uploads/1/3/0/4/130435786/130435786.html#vte+chest+guidelines PDF link annotation
    • http://cruisecatline.com/uploads/1/3/0/3/130313002/wisunazi.pdfIn PDF document text
    • http://cakenetwork.us/uploads/1/3/0/5/130589460/sumelibexogozi.pdfIn PDF document text
    • http://spelotheek.org/uploads/1/3/0/6/130604486/galipulun_gujuwov_ratopipigovewuv_pulanamunuk.pdfIn PDF document text
    • http://flamingoisland.com.au/uploads/1/3/0/6/130603743/faxexiludifipuxif.pdfIn PDF document text
    • http://www.backtoessentialoils.com/uploads/1/3/0/6/130621675/3eb4bbbef67f.pdfIn PDF document text
    • http://scubeagency.com/uploads/1/3/0/3/130313190/7949971.pdfIn PDF document text
    • http://vni3d.com/uploads/1/3/0/7/130776555/tewegojavapefed.pdfIn PDF document text
    • http://yopcrealab.org/uploads/1/3/0/7/130776304/mokewubetevab-gunexumu-xupoxilukukav-fimupakejirid.pdfIn PDF document text
    • http://nwm10.club/uploads/1/3/0/6/130620975/luludasomur.pdfIn PDF document text
    • http://www.anniewhittaker.com/uploads/1/3/0/4/130435909/693580.pdfIn PDF document text
    • http://aussiewoodfilms.com/uploads/1/3/0/9/130969423/xekireniselopumis.pdfIn PDF document text
    • http://www.ogemahouse.net/uploads/1/3/0/6/130604550/zinozimelo.pdfIn PDF document text
    • http://diversityforpresident.com/uploads/1/3/0/2/130287281/xepijad.pdfIn PDF document text
    • http://www.enlistaction.com/uploads/1/3/0/5/130550672/4956301.pdfIn PDF document text
    • http://blubloggs.com/uploads/1/3/0/8/130814078/e280a32a.pdfIn PDF document text
    • http://www.welsociety.com/uploads/1/3/0/6/130621794/2681432.pdfIn PDF document text
    • http://hackythoughts.com/uploads/1/3/0/5/130588437/87b3b808919b.pdfIn PDF document text
    • http://www.bathsingforlife.org.uk/uploads/1/3/0/4/130489253/nokulaxerurajek.pdfIn PDF document text
    • http://www.labellevolution.com/uploads/1/3/0/9/130969647/1679371.pdfIn PDF document text
    • http://www.advancedshop.pro/uploads/1/3/0/5/130589322/niwujogodakas.pdfIn PDF document text
    • http://ontariotreeservices.ca/uploads/1/3/0/5/130588606/0bf54d.pdfIn PDF document text
    • http://courtneyscorner89.com/uploads/1/3/0/4/130476984/7143901.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

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B1 7920 bytes
SHA-256: 6a916a834f04ffd0e08f3dbde34f0fa0ec5397b6c05104003bb457cf33388764

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