Malicious PDF — malware analysis report

Static analysis result for SHA-256 282add643212cb29…

MALICIOUS

PDF

83.4 KB Created: 2021-05-20 14:36:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 95d81fc039c79104e92803ff53efb81f SHA-1: 70e2a08ce69cdb21b7abd22bdac343cafe44a92d SHA-256: 282add643212cb298546d9a0baa682b2f2ae023f21f832a06fe8da5471296ffd
144 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The presence of a 'Payment redirection / bank-detail change lure' heuristic strongly suggests a business email compromise (BEC) or financial fraud attempt. The embedded URL, https://maypoin.ru/strik?utm_term=how+to+text+a+sugar+daddy+first, likely serves as the destination for the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://maypoin.ru/strik?utm_term=how+to+text+a+sugar+daddy+first PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426090/normal_5fe7a11d2ed99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403948/normal_6017200437d5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454180/normal_6052834c26daa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392656/normal_6020fa97c3a68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406454/normal_60449d477594a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444649/normal_60151636dd774.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368494/normal_603d0558e4419.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484814/normal_5ffab04612e36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368756/normal_6035b3acb286c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449599/normal_60195288d659e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0fed0c7-d245-43ff-aeb7-c62c56c8f2b0/fobadenulewakuxowetiga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1e8b593-331d-43c6-98e5-e517f18aae84/how_to_create_a_bitcoin_fork.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/time_attendance_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/alphabet_games_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/what_does_equus_grevyi_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/004ed54b-5e93-4ce8-9981-0f6abcf7b472/white_rodgers_1f80_361_wrong_temperature.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/low_carb_food_list_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e49684ac-af07-4f89-a947-8057bfed3b54/ikea_hemnes_queen_bed_frame_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/bikirepagaxewafi.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/manual_testing_vs_automation_testing_roi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fadaf60-9321-4ff7-b2ec-41b31fda247c/world_war_z_2019_video_game.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/sefojavu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51f88573-8c11-4538-b828-a08c16b83882/58088822488.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12efa09f-31c3-4470-82cc-d975d7f08d66/what_are_the_rules_of_billiards.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/852062dd-ff02-42b6-bb48-b50df45f9b4c/intermediate_algebra_and_functions.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_off000106df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106DF 5264 bytes
SHA-256: 9ea0194d7755b5d8f9e4d7bbc66e8961b2dc6d8979513d042baf59cb23e367b0
font_01_sfnt_off000118ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118EE 10960 bytes
SHA-256: c4814e4d9d203fe6ba8178bad1318b4512e0133a1112f1b2a9323eb3439d8052