Malicious PDF — malware analysis report

Static analysis result for SHA-256 8136d131652fd500…

MALICIOUS

PDF

43.6 KB Created: 2020-04-17 11:12:21 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-12-25
MD5: 67adc4874b4be4c99a6ac8e56c43dc14 SHA-1: 77440521fd9c8975c8e396e2c94501cf24522ff6 SHA-256: 8136d131652fd5003fd3dfd307464c81fc97be2ec3e424116969186a9b9bd7f3
96 Risk Score

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://com-unlocked-valid-account.com/uploads/1/3/0/5/130550938/130550938.html#eclipse+sun+shade+application+guide PDF link annotation
    • http://groovypodcast.com/uploads/1/3/0/3/130324075/4038546.pdfIn PDF document text
    • http://sigridhustad.com/uploads/1/3/1/0/131070317/gufekameruwip.pdfIn PDF document text
    • http://fit1athletics.com/uploads/1/3/0/4/130483753/4328796.pdfIn PDF document text
    • http://barberpoledirect.net/uploads/1/3/0/5/130551325/laxepafafefatij.pdfIn PDF document text
    • http://kathycarlin.com/uploads/1/3/0/2/130272505/sodawebawizatizurip.pdfIn PDF document text
    • http://uvpickleball.com/uploads/1/3/0/5/130543212/kevowubew-magikug.pdfIn PDF document text
    • http://alaskanexplorer.org/uploads/1/3/1/3/131383727/vurajofoxobe.pdfIn PDF document text
    • http://cinemillion.com/uploads/1/3/1/4/131438309/bijebaludefas.pdfIn PDF document text
    • http://nissanrentalcaroutlet.com/uploads/1/3/0/5/130590739/nejusiteluvitata.pdfIn PDF document text
    • http://marketingofcourse.com/uploads/1/3/1/0/131070227/6486053.pdfIn PDF document text
    • https://eclipsesunshadesIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A77 8384 bytes
SHA-256: 61404fbd3d3c88d108e067c468d95d94b0a2f774d3c9c60b3acd444eb04a4d8b
font_01_sfnt_off00008ad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD8 16204 bytes
SHA-256: f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d

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