Malicious PDF — malware analysis report

Static analysis result for SHA-256 03f87627e0dd3b3c…

MALICIOUS

PDF

80.8 KB Created: 2021-05-18 15:32:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed8add77367056a1749b8055686dff44 SHA-1: e9384e29f4cd54fa9f6b3ef2a1248c03e0c2d12f SHA-256: 03f87627e0dd3b3c0a78c2dc5e2753bc33a0817f17e92f4181cec9937158ef66
136 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. Heuristics indicate it uses an advance-fee scam lure, common in phishing campaigns. The embedded URL, 'https://dafemum.ru/strik?utm_term=what+is+bank+address+for+wire+transfer', likely serves as a malicious link to further the scam.

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://dafemum.ru/strik?utm_term=what+is+bank+address+for+wire+transfer
    • https://cdn-cms.f-static.net/uploads/4383791/normal_601dbdadec477.pdf
    • https://foziramud.weebly.com/uploads/1/3/4/5/134585073/6665997.pdf
    • https://cdn-cms.f-static.net/uploads/4463830/normal_6064e55d0d15b.pdf
    • https://feposejixadolo.weebly.com/uploads/1/3/4/7/134744373/fubodabuso.pdf
    • https://zedasadexim.weebly.com/uploads/1/3/0/7/130775923/legogonivag.pdf
    • https://betepojikimiji.weebly.com/uploads/1/3/0/8/130874485/jidide_diwetotoruwi_nazitusibapu.pdf
    • https://cdn-cms.f-static.net/uploads/4393356/normal_603dad89dc0bc.pdf
    • https://static.s123-cdn-static.com/uploads/4454984/normal_5fe41638a84f8.pdf
    • http://tudeboroxope.22web.org/what_is_a_visual_learner_called.pdf
    • https://febodume.weebly.com/uploads/1/3/2/8/132815732/danavaxapopon.pdf
    • http://lovelatu.iblogger.org/how_to_play_cello_suite_no.1.pdf
    • https://jopuwijexanubuf.weebly.com/uploads/1/3/0/8/130874501/54dfa3c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xilasisefi/jewelled_lacerta_care_sheet.pdf
    • https://uploads.strikinglycdn.com/files/4fdfe108-87c8-430d-9336-6bc81a5ef44d/takuse.pdf
    • https://s3.amazonaws.com/vokeri/essence_of_pride_guide.pdf
    • http://gusipeviriw.rf.gd/embryology_free.pdf
    • https://s3.amazonaws.com/kewakuko/bizewexazenosakibifinivoz.pdf
    • https://uploads.strikinglycdn.com/files/ecdfae50-6298-4bf3-b026-b1ea6ad1abea/journey_to_the_centre_of_the_earth_3d_blu_ray_review.pdf
    • https://uploads.strikinglycdn.com/files/6ef62efb-7187-4191-bf65-b4a7dc9b1f3e/74782913465.pdf
    • https://s3.amazonaws.com/netinuwa/78447450069.pdf
    • https://uploads.strikinglycdn.com/files/4886cca9-3058-4a9c-a753-c8089f494956/56966400136.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd66.bin
fdcf362abd7ce55321a641cb6f69b35f75031f7f0be49a6428bfb2ccd3fd147f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD66 5272 bytes
font_01_sfnt_off00010f61.bin
11c480eac164fc7494cd916ad7d0b4672825e98e0bb83e0e464d350a661d88fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F61 11296 bytes

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