Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8480f015cd734a7…

MALICIOUS

PDF

95.0 KB Created: 2021-02-18 11:18:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 401ded5aba949fd768884f5b2296fb0a SHA-1: 11e1b9b4a61c46808af2f67736e56d38e16a8e23 SHA-256: d8480f015cd734a7967d1b70f08fea4ed7a7aa2a87312e9181870477458540ba
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with a significant heuristic indicating it's a link farm on disposable hosting. The primary malicious URL identified is https://jottigo.ru/wix?keyword=pfsrd+special+materials, which likely serves as a redirector to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://jottigo.ru/wix?keyword=pfsrd+special+materials PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409997/normal_600cee6390391.pdfIn PDF document text
    • https://fezemopozopedet.weebly.com/uploads/1/3/5/3/135326879/lujurojaligulokinapo.pdfIn PDF document text
    • https://fujovufizopi.weebly.com/uploads/1/3/2/7/132710671/4227096.pdfIn PDF document text
    • http://winoraama.site/solidworks_weldments_exercises4gax2.pdfIn PDF document text
    • https://wowaximemufa.weebly.com/uploads/1/3/1/4/131453960/8385861.pdfIn PDF document text
    • https://serewutedirafam.weebly.com/uploads/1/3/5/3/135339767/nutizire.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://latujetob.epizy.com/reluximakelugabeg.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/oxidised_copper_sheets.pdfIn PDF document text
    • http://karimelu.rf.gd/granny_smith_latest_apk.pdfIn PDF document text
    • http://vuzabog.epizy.com/types_of_stereoisomerism.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12232 5300 bytes
SHA-256: 47f8ac6e012f7e061ba53a6b230a4eab227eac4ac52c7f97c8702070e06b2661
font_01_sfnt_off00013426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13426 10748 bytes
SHA-256: bf05d853167dbf38aa1a870a6f5c8c9dd543d6b893358bf92aa034a9e96c2830
font_02_sfnt_off00015933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15933 16352 bytes
SHA-256: 9a4674c6a23e3c9f46d8b3d6638d716c985f9c7af6a286389dd003857f51bdd6

Open this report in the interactive analyzer, or submit your own file for analysis.