Malicious PDF — malware analysis report

Static analysis result for SHA-256 e767451fc098e1ff…

MALICIOUS

PDF

45.1 KB Created: 2020-06-03 22:52:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 4a03d905ff56cd67268e936306238852 SHA-1: e9ace9e6629b62b9347bf0e397e3096a8c6faa14 SHA-256: e767451fc098e1fff9d8c6277f7b232d1e23f71f10b262ae4462153f268a840f
96 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for a link farm, indicating it is designed to redirect users to numerous other PDF files hosted across various domains. The document body, though heavily obfuscated, contains URLs that are part of this link farm. This suggests a social engineering tactic to drive traffic to potentially malicious or spam-related content.

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://zailiyazaita.com/uploads/1/3/0/7/130775071/130775071.html#factores+endogenos+y+exogenos+criminologia PDF link annotation
    • http://uninsus.org/uploads/1/3/0/7/130739775/8935740.pdfIn PDF document text
    • http://zerohourga.org/uploads/1/3/0/5/130588168/7567032.pdfIn PDF document text
    • http://paintsandillustrates.com/uploads/1/3/1/4/131438442/f060a96.pdfIn PDF document text
    • http://myjesustalk.com/uploads/1/3/1/1/131164243/ca51e69.pdfIn PDF document text
    • http://ameliavaughan.com/uploads/1/3/0/7/130775592/6038672.pdfIn PDF document text
    • http://triniortho.com/uploads/1/3/0/7/130738902/nofolugo.pdfIn PDF document text
    • http://lovelejewellery.com/uploads/1/3/0/5/130540063/c1bdb4da45df6.pdfIn PDF document text
    • http://creative-english.ch/uploads/1/3/1/1/131164266/8c47cc2de959765.pdfIn PDF document text
    • http://studiocitynorth.com/uploads/1/3/0/6/130621310/gisipotisobev_kurigukev_wumafuj.pdfIn PDF document text
    • http://nishkarshcoaching.in/uploads/1/3/1/3/131383921/migodesunusil.pdfIn PDF document text
    • http://mrmacbiblebook2.com/uploads/1/3/0/5/130544889/tokefimamam_nakesomof_pejatoralab_diwenufu.pdfIn PDF document text
    • http://1221citycenteroakland.com/uploads/1/3/1/3/131384255/3673661.pdfIn PDF document text
    • http://zailiyazaita.com/uploads/1/3/0/7/130775071/terms.htmlIn PDF document text
    • http://zailiyazaita.com/uploads/1/3/0/7/130775071/dmca.htmlIn PDF document text
    • http://zailiyazaita.com/uploads/1/3/0/7/130775071/policy.htmlIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://dixurozazix.files.wordpress.com/2020/06/minovoradujawevejalapigoz.pdfIn PDF document text
    • https://suvodopa.files.wordpress.com/2020/06/21549650879.pdfIn PDF document text
    • https://rogezomul.files.wordpress.com/2020/06/zapevefezovosek.pdfIn PDF document text
    • https://zogewuvoxer.files.wordpress.com/2020/06/lewegamebupaw.pdfIn PDF document text
    • https://kuramajibi.files.wordpress.com/2020/06/minefimexumifubagabatomul.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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 2

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76FE 1696 bytes
SHA-256: 4ba965427ede4ce146ea3e6dd612ee8a4b2c838108a8f17429e63e1908931bbf
font_01_sfnt_off00007f68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F68 12004 bytes
SHA-256: d2f316a8fee55796a2b69972ad8212b431e7e9b805bad8f7b6a4c6c7ea101770

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