Malicious PDF — malware analysis report

Static analysis result for SHA-256 b217ace580699046…

MALICIOUS

PDF

74.7 KB Created: 2021-01-11 08:21:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 20ddfc628687cb4ce01034dedc2f8109 SHA-1: 7669918150f00031e279fd9650d91b83a079ac6a SHA-256: b217ace580699046f6965a936c4af540f5b5407dcfbd5d3a331306f2ab9a89b0
134 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many hosted on disposable domains, suggesting a link farm or phishing infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of external URIs and the 'SEO_DISPOSABLE_LINK_FARM' heuristic point towards a campaign distributing malicious content via deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://trafftec.ru/aws?utm_term=agents+of+shield+series+guide PDF link annotation
    • https://todijaxazifaro.weebly.com/uploads/1/3/4/3/134342800/momusoripukaripojob.pdfIn PDF document text
    • https://jimamejovegevag.weebly.com/uploads/1/3/4/5/134593921/fufevuzimewunanuxij.pdfIn PDF document text
    • https://modizotu.weebly.com/uploads/1/3/2/7/132740501/mefamexazur.pdfIn PDF document text
    • https://site-1174906.mozfiles.com/files/1174906/resurazupaw.pdfIn PDF document text
    • https://site-1176039.mozfiles.com/files/1176039/build_a_bridge_limp_bizkit_guitar_tabs.pdfIn PDF document text
    • https://site-1202186.mozfiles.com/files/1202186/the_minority_report_story_analysis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390680/normal_5fad5b97d5409.pdfIn PDF document text
    • https://site-1178255.mozfiles.com/files/1178255/pocket_watch_value_by_serial_number.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470035/normal_5fc3cd8bdb94f.pdfIn PDF document text
    • https://site-1174676.mozfiles.com/files/1174676/rifuwawuvelanuliroxaxeku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/advertising_management_calicut_university.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e96b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE96B 4948 bytes
SHA-256: 6ff33806ea9a01d4a8a395a248b1f252021904fb9bff27481df033485eedd98c
font_01_sfnt_off0000fa40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA40 10512 bytes
SHA-256: ea6b82409687d5af8db791cfac7cefd03aa1d5bc293fc8a6aeaa5f1fd491c940

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