Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad3c769c0f67a9f6…

MALICIOUS

PDF

44.0 KB Created: 2020-03-27 09:50:45 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 8dd7aed4cbfdf161805f80ef66c71020 SHA-1: 62340afbe5a8f962759d2c0f671528509646fce1 SHA-256: ad3c769c0f67a9f68db358fae13292bb0bf612d9932fb6ddcda791e38545348b
136 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the presence of numerous URLs suggests the document is designed to redirect users to potentially malicious websites, possibly for SEO spam or to host further malware. The document body contains garbled text and embedded URLs, reinforcing the link-farming attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://731electro.com/uploads/1/3/0/8/130874326/130874326.html#dragon+touch+a1x+plus+specs PDF link annotation
    • http://homefrontinvestingllc.net/uploads/1/3/0/4/130493968/luwajodopunu.pdfIn PDF document text
    • http://sorsmarketing.com/uploads/1/3/0/8/130874264/fb8167f800cd.pdfIn PDF document text
    • http://lgnrg.net/uploads/1/3/0/2/130270847/virokofipop.pdfIn PDF document text
    • http://kinkycurlyweaves.com/uploads/1/3/0/6/130640024/51de1.pdfIn PDF document text
    • http://nodoubthomeinspection.com/uploads/1/3/0/6/130604731/fojuxotigo.pdfIn PDF document text
    • http://www.sfolimo.biz/uploads/1/3/0/5/130590308/e389fcccf910.pdfIn macro / runtime command snippet
    • http://silverspurcamp.com/uploads/1/3/0/6/130620265/3193206.pdfIn PDF document text
    • http://www.homelanddefenseconsultants.com/uploads/1/3/0/5/130588962/3add10723.pdfIn PDF document text
    • http://denvercreativeservice.com/uploads/1/3/0/5/130588687/383ab0c7b222c.pdfIn PDF document text
    • http://radiumfundllc.com/uploads/1/3/0/2/130287504/sexadekana.pdfIn PDF document text
    • http://chrisdelany.com/uploads/1/3/0/7/130775032/45266e0bff7.pdfIn PDF document text
    • http://helpgarret.life/uploads/1/3/0/3/130313144/1500088.pdfIn PDF document text
    • http://fitnessmanagementgroupbda.com/uploads/1/3/1/3/131379042/9352517.pdfIn PDF document text
    • http://getifi.com/uploads/1/3/0/7/130739021/1812369.pdfIn PDF document text
    • http://www.nutrimbc.com/uploads/1/3/0/7/130740550/vezalijalufufuvanu.pdfIn PDF document text
    • http://lindseymarina.com/uploads/1/3/0/8/130873976/wivafu_desexusider_zaxufegeno_somodevajapapek.pdfIn PDF document text
    • http://newthoughtmanifesting.com/uploads/1/3/0/5/130550928/9386902.pdfIn PDF document text
    • http://schulzlegal.ca/uploads/1/3/0/3/130323814/dinikuzenen-novofusu-rugimaza.pdfIn PDF document text
    • http://wundrmediapro.com/uploads/1/3/0/5/130551023/fulimogisunub_bogek.pdfIn PDF document text
    • http://porchlighthub.com/uploads/1/3/0/8/130874115/9610354.pdfIn PDF document text
    • http://rawopal.com/uploads/1/3/0/5/130590059/xamexetokukenibav.pdfIn PDF document text
    • http://towntaxservices.com/uploads/1/3/0/2/130272606/22857bc078e.pdfIn PDF document text
    • http://detroitrealestateexpo.com/uploads/1/3/0/5/130541641/wilanejimudekise.pdfIn PDF document text
    • http://soghat.eu/uploads/1/3/0/6/130604656/7768586.pdfIn PDF document text
    • http://full.rahelmusic.com/uploads/1/3/0/3/130313728/d040ed64c97.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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B5A 7492 bytes
SHA-256: 6e502d74c180adc04381bc8f95955c15a17f9eef8251cba3b042daaffc964fb8
font_01_sfnt_off000098be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98BE 2616 bytes
SHA-256: d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04