Malicious PDF — malware analysis report

Static analysis result for SHA-256 50f807b90ba5c683…

MALICIOUS

PDF

36.5 KB Created: 2020-05-15 09:31:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 83d4bc586b7607cdbb137225f03249b6 SHA-1: ca1d4271f1f5a76ad855236935f0fe0a751c4b1d SHA-256: 50f807b90ba5c68323f42e07113fd567c286454773c16172b37092160eab5491
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which point to other PDF files on various domains. This pattern is indicative of a link farm or SEO manipulation tactic, potentially used to distribute malicious content or improve the ranking of malicious sites. No scripts were extracted, and the document body is largely unreadable, limiting further analysis of the specific lure.

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://somersetfoodtrail.org/uploads/1/3/1/3/131379991/131379991.html#apc+smart+ups+1500c+manual PDF link annotation
    • http://150daily.com/uploads/1/3/0/3/130323322/xuribona_fawodujewolonus_revojuwasi.pdfIn PDF document text
    • http://befus.ca/uploads/1/3/0/5/130552097/gamizovafumif.pdfIn PDF document text
    • http://earth-origins-symposium.com/uploads/1/3/0/7/130776659/dopopojasadixejinol.pdfIn PDF document text
    • http://20online.net/uploads/1/3/1/8/131856771/2887744.pdfIn PDF document text
    • http://scripthappensdesigns.com/uploads/1/3/0/9/130969747/mexesuz.pdfIn PDF document text
    • http://murraywalshwedding.com/uploads/1/3/0/4/130488396/683b723b.pdfIn PDF document text
    • http://big-bright-earth-store.com/uploads/1/3/0/7/130738850/pupifekej.pdfIn PDF document text
    • http://cbuilderscorp.com/uploads/1/3/1/4/131482988/nevivokinelupi.pdfIn PDF document text
    • http://newriver-yoga.com/uploads/1/3/0/7/130740257/42b818d.pdfIn PDF document text
    • http://interbsales.com/uploads/1/3/1/4/131438385/3251882.pdfIn PDF document text
    • http://closethegapexpeditiously.com/uploads/1/3/0/2/130271042/duxikoxomidute_getuj.pdfIn PDF document text
    • http://fugeforasia.com/uploads/1/3/0/2/130289189/zizeju.pdfIn PDF document text
    • http://claycityimperialregiment.com/uploads/1/3/1/1/131164236/dd3a40221c2.pdfIn PDF document text
    • http://earthlydifference.com/uploads/1/3/0/6/130604956/9176914.pdfIn PDF document text
    • http://branchesandroots.net/uploads/1/3/1/4/131438211/lamuwegixif.pdfIn PDF document text
    • http://baysidetvrepairs.com/uploads/1/3/0/3/130379804/cec2365fbd96.pdfIn PDF document text
    • http://georges-blog.com/uploads/1/3/1/4/131438110/4b4e10b84ed.pdfIn PDF document text
    • http://fortwilliamseatours.com/uploads/1/3/0/2/130289675/wifamozinagin-negez-zapuxovok-tewapazivufuwew.pdfIn PDF document text
    • http://ifaservices.eu/uploads/1/3/0/5/130590567/6314912.pdfIn PDF document text
    • http://canopymgm.com/uploads/1/3/1/8/131871390/ea717713b40d4.pdfIn PDF document text
    • http://scuwibblog.com/uploads/1/3/1/8/131857590/87c910c6.pdfIn PDF document text
    • http://northernlightsperuvianhorseclub.com/uploads/1/3/0/5/130547576/pibomir.pdfIn PDF document text
    • http://ruralpreservationsociety.org/uploads/1/3/1/6/131606874/nafebufotivarosuxef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Related samples 3

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_off0000630e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630E 10316 bytes
SHA-256: 60669f66e39f94d6182922defc2e761059e700ffd14e2bd0ace67f287e494058

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