Malicious PDF — malware analysis report

Static analysis result for SHA-256 3367ec162a4b4211…

MALICIOUS

PDF

69.0 KB Created: 2021-05-25 06:52:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 0e995b726c23a7f10c8654caf6fc7bce SHA-1: 614a30b5789f35b5bb0e92175f7658117fe70b03 SHA-256: 3367ec162a4b421135ca31906410128226baf78eb7a45665426ca3d6138214ed
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains numerous links to external websites, with a primary URL suggesting a lure for free music downloads. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, many of which are likely malicious or part of a link farm. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. The presence of embedded JavaScript, though not fully detailed, suggests potential for exploitation.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/strik?utm_term=qayamat+se+qayamat+tak+mp3+song+free+download+webmusic PDF link annotation
    • https://wozizagozesa.weebly.com/uploads/1/3/4/8/134848764/jogumujaxekekib.pdfIn PDF document text
    • https://nupuwumot.weebly.com/uploads/1/3/5/3/135305030/7049184.pdfIn PDF document text
    • https://sakotitalivuvu.weebly.com/uploads/1/3/4/8/134887700/ralixiritoxamim.pdfIn PDF document text
    • https://fekebejoluxoji.weebly.com/uploads/1/3/4/3/134309121/7697654.pdfIn PDF document text
    • https://rikudebuwixe.weebly.com/uploads/1/3/4/5/134589128/tivozimo.pdfIn PDF document text
    • https://jexepasevotapak.weebly.com/uploads/1/3/1/6/131606223/5601129.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/pazovugal/aver_information_inc_fremont_ca.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/a_separate_peace_vocabulary_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/reporter_murdered_in_somalia.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/what_is_effective_date_and_record_date_for_dividend.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/53862683234.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/79755052380.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/what_is_the_best_counter_depth_refrigerator_on_the_market.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/browserling_play_store_jio_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/esma_guidelines_remuneration_mifid_ii.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/how_to_clean_vacuum_filters.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/xugonesexowabidajirot.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/chromium_for_macbook.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/consumer_reports_mattress_buying_guide_issue.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/how_to_grade_speaking_test.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/dictionary_english_to_persian_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/berkshire_blanket_queen_sheets.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_off0000cf22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF22 6224 bytes
SHA-256: 5574cb48869ea06d1057cd6f86f61326d6410743ec7c7a1f64dc2d8ff7372dbb
font_01_sfnt_off0000e44c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44C 10028 bytes
SHA-256: 2e0b6f7a5a34cbd0229615608a1bc61f1d6496b7652867342fc6e16557fa24eb

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