Malicious PDF — malware analysis report

Static analysis result for SHA-256 f58981bf1aa04da7…

MALICIOUS

PDF

92.5 KB Created: 2021-03-04 22:38:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: c91cf1582b2c7a0bc1f6881cd9bd7772 SHA-1: 0b03dad63d4ded24f7b29551dfdbbdb994f89c70 SHA-256: f58981bf1aa04da7679019b8f0f3699f1048f7231a347ef84337ba4ac41527b1
104 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs and urgency lures. The embedded URL `https://jumiwimov.ru/wix?keyword=palm+beach+papa+search` is a primary indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to redirect users to malicious sites, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://jumiwimov.ru/wix?keyword=palm+beach+papa+search PDF link annotation
    • http://twirlini.com/arithmetic_sequence_worksheet_7th_gradeo4u6p.pdfIn PDF document text
    • http://sosed.market/what_happens_if_too_much_solvent_is_used_for_recrystallizationdk5jr.pdfIn PDF document text
    • http://zedateve.mypressonline.com/how_to_use_google_translate_conversation_offline.pdfIn PDF document text
    • http://dutov.org/dekutajerozotilekokejomhqlg.pdfIn PDF document text
    • http://laribij.scienceontheweb.net/tifazabikolefurasi.pdfIn PDF document text
    • http://epaytds.xyz/bukev5lb5l.pdfIn PDF document text
    • http://doxalasi.mywebcommunity.org/what_state_produces_the_most_dairy_farms.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vejegaba.atwebpages.com/what_does_managerial_accounting_focus_on.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/nakopujolovazuruwis.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/the_hunting_party_linkin_park.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecccdc62-bc93-4c9e-9367-ba9d2ca8a3c7/autocad_top_commands_missing.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/machine_learning_framework_ruby.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/tebabadetinujamu.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/83943551617.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/lidigetoj.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/12622484036.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bbb734d-d81d-4af0-9460-b78d40a538a9/what_is_considered_a_constitutional_democracy.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/76552034333.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/bahubali_songs_telugu_320kbps_free.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_off00012d0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D0A 5312 bytes
SHA-256: fc719055be59a380e9065d3c11ffb6c18abf86972edf8b1e01e7fe2b676640f0
font_01_sfnt_off00013ee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EE8 11048 bytes
SHA-256: b0c997a9c372dde7b63e527c19b892970e178d74015a6438a9ea37aa6cfffd03

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