Malicious PDF — malware analysis report

Static analysis result for SHA-256 300816e54ca14be6…

MALICIOUS

PDF

56.7 KB Created: 2020-06-19 02:00:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 47eb240349277097f57ba2a6e6ba4fa7 SHA-1: 571dd72a559fd8439ec64c9302af032c64ea4870 SHA-256: 300816e54ca14be6a244c5d27b06148329abded769ce44060f285e241a8073b9
96 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, identified as a link farm. The document body, though heavily obfuscated, contains text related to 'Home loan guidelines 2012', suggesting a lure to direct users to potentially malicious external sites. No scripts were extracted, limiting the analysis of direct payload execution.

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://nateazrin.com/uploads/1/3/0/3/130313411/130313411.html#home+loan+guidelines+2012 PDF link annotation
    • http://niveditainstitutions.com/uploads/1/3/1/3/131379792/zukadas_zakipijubekagi.pdfIn PDF document text
    • http://youthfulskindoctor.com/uploads/1/3/0/2/130289304/xanadorofekabu.pdfIn PDF document text
    • http://philadelphiaslimo.com/uploads/1/3/0/3/130323339/palodajuril.pdfIn PDF document text
    • http://joseucanbriceno.com/uploads/1/3/0/7/130739963/fe006abb.pdfIn PDF document text
    • http://webdisk.coastalsamaritan.org/uploads/1/3/0/4/130476572/datuto_lurorixinot.pdfIn PDF document text
    • http://stonephysicaltherapy.com/uploads/1/3/0/7/130739433/patajutijedi.pdfIn PDF document text
    • http://mta-sts.mx.dcsav.org/uploads/1/3/0/3/130323208/duxawodufaripavojep.pdfIn PDF document text
    • http://mail.billmohrart.com/uploads/1/3/0/4/130489563/wipez.pdfIn PDF document text
    • http://katskornerinternational.org/uploads/1/3/1/4/131438202/razonegupel_boriz.pdfIn PDF document text
    • http://1mn.undesirable.us/uploads/1/3/0/5/130539099/1677989.pdfIn PDF document text
    • http://aznaysacbd.com/uploads/1/2/9/4/129426716/129426716.html?obraIn 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000848b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x848B 5136 bytes
SHA-256: e97c5ab0226f271292a0af7d633e22946464d99d55510f931e4a10c94cc6ef8c
font_01_sfnt_off000095dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95DD 7680 bytes
SHA-256: 78dd77b97ab8850f40b82f40f52acc125a3bc10663aa6b99eab0430b830a1a34
font_02_sfnt_off0000af38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF38 11440 bytes
SHA-256: d67ecee7efdb38125f8265489b81197a0a2c629c462c6e928c824cca474c15a7