Malicious PDF — malware analysis report

Static analysis result for SHA-256 36154c0b65fd0a8a…

MALICIOUS

PDF

37.7 KB Created: 2020-04-15 06:27:38 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-08-25
MD5: 6b7f6bd152d00f7ebd88e5af3804c47d SHA-1: 8f04ebd32c1a320cb04925a5883d129e133c0e2a SHA-256: 36154c0b65fd0a8a1dc839b57cb113a1eb53d44ed26823a7276c1b0ea584e5f4
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, many of which appear to be part of a link farm strategy. The document body contains a seemingly innocuous title and some metadata, but the primary malicious activity is the distribution of these numerous URLs. 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://creixemalcarme.org/uploads/1/3/0/5/130540280/130540280.html#latest+weather+report+of+jammu+and+kashmir PDF link annotation
    • http://vtskidr.com/uploads/1/3/0/7/130774966/tajuwavageru.pdfIn PDF document text
    • http://gmpunjabideals.com/uploads/1/3/0/5/130551957/3471544.pdfIn PDF document text
    • http://ironhorseink.com/uploads/1/3/1/1/131163890/955172.pdfIn PDF document text
    • http://jkthoroughbreds.com/uploads/1/3/0/5/130539016/janorugufetavo_regoraf.pdfIn PDF document text
    • http://tutti.boutique/uploads/1/3/0/4/130477007/d0ec112591de.pdfIn PDF document text
    • http://prairierockarchitecture.com/uploads/1/3/0/3/130313063/4617999.pdfIn PDF document text
    • http://spidersweb.me/uploads/1/3/1/4/131453219/151d058cc69.pdfIn PDF document text
    • http://1worldcode.com/uploads/1/3/0/5/130543198/xemelefemamutusivij.pdfIn PDF document text
    • http://dandelionwings.com/uploads/1/3/0/8/130814310/4572499.pdfIn PDF document text
    • http://thepawpuppy.online/uploads/1/3/0/2/130289163/doduxemowepon.pdfIn PDF document text
    • http://littleamericamovie.com/uploads/1/3/1/3/131398184/1235115.pdfIn PDF document text
    • http://bcroofingcompany.com/uploads/1/3/1/0/131070147/43b1b39.pdfIn PDF document text
    • http://simplycleanindy.com/uploads/1/3/0/4/130436242/2cdd764.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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F22 6760 bytes
SHA-256: 56c5a12573aaa1a563ed618f0d9a6f31dfddf15eaa76c8f7e64909ece3793685
font_01_sfnt_off000069c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C8 2652 bytes
SHA-256: e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc
font_02_sfnt_off0000732f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x732F 16060 bytes
SHA-256: 6ddf53b883350c964210757953e72edacca849803b95280767352c6c691d264d

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