Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ecca86c0c0868d…

MALICIOUS

PDF

73.7 KB Created: 2021-02-20 01:39:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f97637845ab1d253e86fa06d04203e01 SHA-1: 2acb3893aa8da1f554cfa1af552d92448efba362 SHA-256: f8ecca86c0c0868d19235381b8801c274dad52dcdb0a92b163a0aa843f3aa227
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI that mimics a search result for a printer issue, directing users to a suspicious domain. ClamAV and ML classifiers strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit user trust and lead them to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • 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://maypoin.ru/wb?keyword=hp%20officejet%204630%20will%20not%20print%20black PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4388427/normal_5fcf1664bcf1b.pdfIn PDF document text
    • https://nuxabofubuwaxef.weebly.com/uploads/1/3/2/7/132740905/tevowanevuragosove.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426556/normal_600c0d0d625ec.pdfIn PDF document text
    • https://dezijetide.weebly.com/uploads/1/3/4/8/134864221/8ce0eb.pdfIn PDF document text
    • https://kazilapematif.weebly.com/uploads/1/3/5/2/135293457/nuwab.pdfIn PDF document text
    • http://wopivobozas.66ghz.com/54089054718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377371/normal_6010515e2b5b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367937/normal_5fd38ef4ef937.pdfIn PDF document text
    • https://talovilivakalod.weebly.com/uploads/1/3/5/3/135326419/jixutegur.pdfIn PDF document text
    • https://cdn.sqhk.co/dolubivo/i9oPjgV/solenotowonureluwuju.pdfIn PDF document text
    • http://sayfelengs.space/pawimosawoliwudrdjq9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jaziwovapotulit.epizy.com/job_interview_question_and_answer_in_english.pdfIn PDF document text
    • http://sipofepusadofas.rf.gd/marketing_strategy_definition.pdfIn PDF document text
    • http://jerasopel.epizy.com/17802356419.pdfIn PDF document text
    • http://bomigezi.epizy.com/vafalimejorubinipugotagid.pdfIn PDF document text
    • http://siroluga.epizy.com/duxewofagezokapinoba.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_off0000e20b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE20B 5712 bytes
SHA-256: 88758172034fb8020f5e67bb0d618fd10c21bda3477d3a990dcad1b0e5ee438a
font_01_sfnt_off0000f5ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5AC 10620 bytes
SHA-256: c1a3857107b7aa6034f698cd7b99aabd69b21522d48bb8b0eee1f00ed6a09c1c

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