Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea5c3961f3a0a23e…

MALICIOUS

PDF

53.5 KB Created: 2020-03-12 06:52:23 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 94811d3e4db94a20c4e992d65097599d SHA-1: 00ea180512ef913c9f88ae1262c7a660001b2f8a SHA-256: ea5c3961f3a0a23e0ae2a65d902cd98bb6b87bf71d65a442d11deee99d01f3ba
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, forming a link farm. The primary URL points to a page that itself contains numerous links to other PDF files hosted on various domains. This suggests a tactic to distribute malicious content or SEO spam across many sites. No scripts were extracted from this sample.

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://i94wdqna.brdge.org/uploads/1/3/0/8/130815137/130815137.html#mapa+mudo+politico+de+america+para+imprimir PDF link annotation
    • http://shepherdsview.org/uploads/1/3/0/5/130539046/8534809.pdfIn PDF document text
    • http://jperealty.com/uploads/1/3/0/5/130543141/razukubapedika.pdfIn PDF document text
    • http://washingtoncyclisme.com/uploads/1/3/0/6/130621203/8c6e380011.pdfIn PDF document text
    • http://whitneyoralsurgery.net/uploads/1/3/0/4/130436513/refawupovog.pdfIn PDF document text
    • http://johncochranartwork.com/uploads/1/3/0/6/130621305/zibowose.pdfIn PDF document text
    • http://datasimplicitylabs.com/uploads/1/3/0/6/130605462/varisinobowil_jaterusewe.pdfIn PDF document text
    • http://shawnsealer.com/uploads/1/3/0/5/130589381/lomarozagataver.pdfIn PDF document text
    • http://standforking.com/uploads/1/3/0/5/130540046/da9a6461.pdfIn PDF document text
    • http://pxrministries.org/uploads/1/3/0/7/130739697/vesisuberituma.pdfIn PDF document text
    • http://localhost.christking.org/uploads/1/3/0/2/130289793/5074164.pdfIn PDF document text
    • http://www.ryanjmcvay.com/uploads/1/3/0/2/130274076/pisokolugijigas-zosubifewer.pdfIn PDF document text
    • http://tonyvu.io/uploads/1/3/0/4/130488370/nulos-roxisijozabinar-liwavapabe.pdfIn PDF document text
    • http://autodiscover.oversightconsult.com/uploads/1/3/0/3/130313590/6597672.pdfIn PDF document text
    • http://74-123-78-146.mgwnet.com/uploads/1/3/0/9/130970016/kuxejig-losugotidav-katijifal.pdfIn PDF document text
    • http://autodiscover.callyfarr.ca/uploads/1/3/0/7/130739264/5a2cba3d.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://www.adobe.com/).NotoIn PDF document text
    • http://www.google.com/get/noto/http://www.adobe.com/type/ThisIn PDF document text
    • http://scripts.sil.org/OFLNotoIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
🗂 Part of campaign: agicole-acces.com 11 samples

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B04 10180 bytes
SHA-256: 399d382cc16015272a2ab0f94435d5ce0ac48dfa3a2e3bdfff8ad2bc39b70e78
font_01_sfnt_off00008de7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE7 4808 bytes
SHA-256: b690150ea62f439655b4efa18c5588cd39df9dc3f36e087faf1c8c16d3fcbbf4
font_02_sfnt_off00009d60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D60 16684 bytes
SHA-256: f962d1bf3fcaf8a75fbef37bf4396b8e7490ad5b98475d95e41ea7609c12e1b3
font_03_sfnt_off0000b47b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB47B 6620 bytes
SHA-256: 4d2650191318e8fd439df5003fc9a59485bf31816a31a5f9d83c20b9fc7d82ee

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