Malicious PDF — malware analysis report

Static analysis result for SHA-256 e18cf553780c1701…

MALICIOUS

PDF

37.1 KB Created: 2020-05-16 00:29:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 75e077ade36d330e79213af122947efe SHA-1: e92961deb1b791c3564f1a720b237e54682dba7b SHA-256: e18cf553780c1701f67598070e3c098b16781092e3656f39ce97abdaa3d71805
96 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or distribution network. The embedded document body text also contains an external URL, further supporting this attack pattern. No scripts were extracted from this sample.

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://joshleephotojournalist.org/uploads/1/3/0/6/130620459/130620459.html#arcore+android+app PDF link annotation
    • http://sociedadanalisisjuridico.org/uploads/1/3/0/7/130738918/dde62ac9106039.pdfIn PDF document text
    • http://sunflower-sweets.com/uploads/1/3/0/8/130813042/7064953.pdfIn PDF document text
    • http://re-rigged.com/uploads/1/3/0/2/130289461/d23f1.pdfIn PDF document text
    • http://cleanpaintbooth.com/uploads/1/3/1/8/131871627/bunogijotot-wagonexafape-wudabotividobe.pdfIn PDF document text
    • http://vervedance.com/uploads/1/3/0/5/130551994/329c0ae311b4.pdfIn PDF document text
    • http://24millstillrd.com/uploads/1/3/0/7/130739017/9092435.pdfIn PDF document text
    • http://icgm.org/uploads/1/3/1/3/131398181/metenutupejidiwe.pdfIn PDF document text
    • http://retaso.com/uploads/1/3/0/8/130814666/mafanijup-bisened-zujujer-kugafax.pdfIn PDF document text
    • http://newwavepoolsandspas.com/uploads/1/3/0/7/130775318/nodasasuto_mafivo.pdfIn PDF document text
    • http://xaviersims.com/uploads/1/3/0/3/130379391/metumekosimomi-womojokoribino.pdfIn PDF document text
    • http://medicareconsultingpros.com/uploads/1/3/1/4/131437604/wuwoseje.pdfIn PDF document text
    • http://spoiledatfirstdrop.com/uploads/1/3/1/6/131606482/vefazologi-bogerupa.pdfIn PDF document text
    • http://mydebtreliefteam.com/uploads/1/3/0/2/130272877/webufis.pdfIn PDF document text
    • http://photomat-mieten.de/uploads/1/3/0/4/130483338/lipidenikozem.pdfIn PDF document text
    • http://tropicaloasiscleaning.net/uploads/1/3/0/8/130873759/7935400.pdfIn PDF document text
    • http://4-hwesternheritageproject.net/uploads/1/3/1/6/131606365/xufapazive_xuxeb.pdfIn PDF document text
    • http://hapticinteractives.com/uploads/1/3/1/1/131163957/b05ea14cc.pdfIn PDF document text
    • http://combatrescueexperience.com/uploads/1/3/0/3/130323596/filepuguz.pdfIn PDF document text
    • http://happypiglet.net/uploads/1/3/0/6/130639428/jaberak.pdfIn PDF document text
    • http://chaletalpemassif.com/uploads/1/3/0/2/130272501/fedexavegijanol.pdfIn PDF document text
    • http://readymixconcretehouston.com/uploads/1/3/1/4/131409274/786749.pdfIn PDF document text
    • http://ajbsecurestorage.net/uploads/1/3/1/1/131163902/e7cbfb1fdcfdafd.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 5

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_off000064f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F4 10468 bytes
SHA-256: 037d0f078ab41ae3f215c8cbe737aa71605e6e51d4fcc3ed0b8383c93a41e695

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