Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3cd7774edb6310d…

MALICIOUS

PDF

80.3 KB Created: 2021-04-06 03:11:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: c1b87c03b6bdfedfa75f23a508d77405 SHA-1: 48313a4027e3b59d6a47524e341ff93c0b22178a SHA-256: d3cd7774edb6310d862468c7c9b1a967aae7b9d36b3ccbf6a90282711ac60c3a
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, including one that appears to be a lure related to "acidic radicals and basic radicals pdf". The presence of numerous links to disposable hosting and link farms suggests a phishing or scam operation. No scripts were extracted, but the PDF structure and embedded URIs are indicative of a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/award?keyword=acidic+radicals+and+basic+radicals+pdf PDF link annotation
    • http://xogunajeraxuda.mywebcommunity.org/73419186505.pdfIn PDF document text
    • http://trenketo.buzz/scott_pilgrim_characters_ageud6r3.pdfIn PDF document text
    • http://kirakexig.mypressonline.com/barium_meal_follow_through_procedure.pdfIn PDF document text
    • https://cdn.sqhk.co/jofutagi/e9Ihgie/escape_the_mansion_online_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462732/normal_6023d4adc90a6.pdfIn PDF document text
    • https://bewepuxajijasi.weebly.com/uploads/1/3/4/3/134362307/wafibijire-bagirimisofe.pdfIn PDF document text
    • https://nupanirofedodav.weebly.com/uploads/1/3/4/4/134470916/mefuvives-nomefonuju-semeb-lijupereb.pdfIn PDF document text
    • http://ipoteka.net/wamoduzamitaxaepsfw.pdfIn PDF document text
    • https://cdn.sqhk.co/tixuniwe/u9dihhf/84558090396.pdfIn PDF document text
    • https://cdn.sqhk.co/sekigizakeku/TtDaGhi/1829160125.pdfIn PDF document text
    • https://cdn.sqhk.co/xurazegoba/jjphaha/risk_benefit_analysis_template_excel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446030/normal_603676dd13f89.pdfIn PDF document text
    • https://ziliseze.weebly.com/uploads/1/3/4/8/134855349/fumotimakokekon-wadiwolujanofo.pdfIn PDF document text
    • https://simebofes.weebly.com/uploads/1/3/1/4/131438459/jigimipimurej_murilepitin_lunima.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388282/normal_6062595934b68.pdfIn PDF document text
    • https://cdn.sqhk.co/pasededi/Fmjiijb/58570722617.pdfIn PDF document text
    • https://jufasoxoko.weebly.com/uploads/1/3/5/3/135315704/riturewavopu.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/pegebunov/california_objections_to_deposition_questions.pdfIn PDF document text
    • http://xasejumav.onlinewebshop.net/sony_cyber_shot_dsc_hx300_lens.pdfIn PDF document text
    • http://pigumomibi.onlinewebshop.net/casos_assessment_center.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/25256955437.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/dress_code_between_casual_and_formal.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_off0000ff0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0D 5276 bytes
SHA-256: 2654e18263e49720902e87c456928231f63ded67cb9015fcde558fe655d1e70b
font_01_sfnt_off0001110b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1110B 10108 bytes
SHA-256: 4b2a4a5b47012f70948c1ece1aa4342cac939f35b3a571efe62d19c5aed13d17

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