Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ab636aaa72f20fd…

MALICIOUS

PDF

43.3 KB Created: 2020-05-20 10:55:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 6e9e9097fe5fbd66b442d62eb140d64c SHA-1: 5ff391413d6f68d06aac905c9bfef426fc03d07e SHA-256: 3ab636aaa72f20fd15cbcec4541f758b5be67577b0f5ab02c7a6e6e817276890
96 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The document body contains garbled text and metadata suggesting it was generated programmatically. No scripts were extracted from this sample. The primary attack pattern involves directing users to a vast network of linked domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ciggysound.com/uploads/1/3/0/6/130639867/130639867.html#women%2527s+confessions+fhm PDF link annotation
    • http://wheelchairjockey.com/uploads/1/3/0/9/130969358/a3866c.pdfIn PDF document text
    • http://westeastconnection.com/uploads/1/3/1/1/131164471/pivakoni.pdfIn PDF document text
    • http://vosrl.it/uploads/1/3/0/2/130271207/8284088.pdfIn PDF document text
    • http://maidinjersey.net/uploads/1/3/0/6/130604456/pesadisiga_najujumovoliri.pdfIn PDF document text
    • http://yojoyero.com/uploads/1/3/0/2/130291561/potapu.pdfIn PDF document text
    • http://zarktwain.com/uploads/1/3/0/6/130604812/8410115.pdfIn PDF document text
    • http://sweetsheilastreats.com/uploads/1/3/1/4/131437640/90b4515769.pdfIn PDF document text
    • http://creativewebsites4you.com/uploads/1/3/0/5/130551684/7656191.pdfIn PDF document text
    • http://kidzlandacademy.com/uploads/1/3/0/2/130271167/bf04175.pdfIn PDF document text
    • http://masterscalcutta.com/uploads/1/3/0/7/130738801/bowewivuvapetuf-vaben.pdfIn PDF document text
    • http://kathrynbrown.info/uploads/1/3/0/5/130545396/tubumenawefikiwenaru.pdfIn PDF document text
    • http://waggytailtrails.com/uploads/1/3/1/4/131453051/9a60f5f76eef20.pdfIn PDF document text
    • http://kylemastro.com/uploads/1/3/0/3/130313086/fapomoropazime.pdfIn PDF document text
    • http://reischmannlawfirm.com/uploads/1/3/1/4/131437064/66a8d905110.pdfIn PDF document text
    • http://projella.com/uploads/1/3/0/7/130775897/rizixesose.pdfIn PDF document text
    • http://divafitsportswear.com/uploads/1/3/0/6/130620979/1485564.pdfIn PDF document text
    • http://honeyloverfriend.com/uploads/1/3/0/3/130313089/1257173.pdfIn PDF document text
    • http://secretsinsthemovie.com/uploads/1/3/0/8/130874300/zajulet.pdfIn PDF document text
    • http://christiancornergh.com/uploads/1/3/1/8/131856392/walidorepurage_daroxelaze.pdfIn PDF document text
    • http://awcollision.net/uploads/1/3/0/7/130775817/8923553.pdfIn PDF document text
    • http://howeaboutthat.com/uploads/1/3/0/6/130604778/1967083.pdfIn PDF document text
    • http://thicares.org/uploads/1/3/0/7/130775016/e29dfbccfcc.pdfIn PDF document text
    • http://julieannenicholson.com/uploads/1/3/0/7/130739856/8e592c5706c6.pdfIn PDF document text
    • http://celialindselllavender.com/uploads/1/3/0/5/130588810/misawuwebeguto_tibuzivugepab_zikubenugu.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 6

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_off00007ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD0 11328 bytes
SHA-256: 7428e49253d7666a78cb944558867b6b80a5977c8af3a00bbaecd2d7f453759e

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