Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd6ec2ce1b92d538…

MALICIOUS

PDF

67.2 KB Created: 2021-03-04 00:45:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e4e29a0dbef92d0b5156dc5413df581c SHA-1: b642e003c02c66ea6e71c2451cdd52cd4dd484d9 SHA-256: fd6ec2ce1b92d53825d938666b965206267267b617399cf634d9a03721f64613
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, with a prominent one leading to 'jottigo.ru', suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, contains text related to search queries, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=what+is+holden+evening+prayer PDF link annotation
    • http://muzibatixabu.mypressonline.com/11067228780.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367937/normal_6005ae156b1fd.pdfIn PDF document text
    • http://nizavevorupuj.mywebcommunity.org/86434231647.pdfIn PDF document text
    • http://wikexulefusopa.iblogger.org/java_netbeans_8._2_tutorial.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373281/normal_5fe8cc1c286a8.pdfIn PDF document text
    • https://jimivisimobud.weebly.com/uploads/1/3/4/9/134901817/76b833ebbade05.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422168/normal_5feb07b46760a.pdfIn PDF document text
    • https://tikedamo.weebly.com/uploads/1/3/1/4/131453682/tawadesoba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415052/normal_5ff0de68e0c64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405208/normal_601d4cae7eb27.pdfIn PDF document text
    • https://kojivijagidisu.weebly.com/uploads/1/3/4/0/134042347/vikebej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dowuvoduwitovos.atwebpages.com/42489854795.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/13427082362.pdfIn PDF document text
    • http://xibubixina.epizy.com/xorujujikefewivusugeluve.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B0 5396 bytes
SHA-256: 72abcd45713beba6b4bef1a458c9af890a2e279d25f09598a6b8b8f45016a5c6
font_01_sfnt_off0000dc1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC1A 10628 bytes
SHA-256: 8a28f89b7dc3601da56f2dda666d7bfa6f6dbc2d15a58a7f6953882d554f8d90

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