Malicious PDF — malware analysis report

Static analysis result for SHA-256 38c019438479c278…

MALICIOUS

PDF

81.3 KB Created: 2021-03-23 01:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 902a91ac9ae773152c6fd83fa14b5a87 SHA-1: d5584a637bd32de9d753130942efc49c61db516e SHA-256: 38c019438479c27814c9e2069ccdddfc710a3ba7551f840d42dace3b6d342269
116 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate a callback phishing lure, prompting the user to call a phone number in the context of a GE dishwasher recall. An external URI was also identified, pointing to a URL that appears to be part of the phishing infrastructure.

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://midufefew.ru/wix?keyword=ge+dishwasher+recall+fire+hazard
    • https://tawatoxox.weebly.com/uploads/1/3/4/0/134018263/2e4e701.pdf
    • http://tugalakalat.22web.org/mfc_8480dn_wireless_setup.pdf
    • https://givenuwijuzi.weebly.com/uploads/1/3/4/4/134445792/nifuvaguwiretupigawi.pdf
    • https://libadelalisam.weebly.com/uploads/1/3/4/5/134579317/aa86b6.pdf
    • https://static.s123-cdn-static.com/uploads/4388629/normal_5fc6f8e2a30cd.pdf
    • http://tokigarodam.22web.org/94381478906.pdf
    • https://static.s123-cdn-static.com/uploads/4365656/normal_600692c00f475.pdf
    • https://gokixojegesefa.weebly.com/uploads/1/3/4/8/134864476/teviz-tasef-fexalete-pazelogal.pdf
    • https://gawenowufiwozup.weebly.com/uploads/1/3/1/3/131383543/0af5ba9.pdf
    • https://static.s123-cdn-static.com/uploads/4502236/normal_6008dec1e86e4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://fazafof.rf.gd/98934204590.pdf
    • http://pupuwejerew.epizy.com/netbeans_c_free.pdf
    • https://uploads.strikinglycdn.com/files/f4458bb7-33cb-4057-a1c2-6010f6dd2093/navy_seal_dress_uniform_2020.pdf
    • https://uploads.strikinglycdn.com/files/bddf2c03-9de4-4c2a-9bce-f91e4dd2dc75/hyderabad_chatal_band_dj_songs_mp3_download.pdf
    • https://uploads.strikinglycdn.com/files/f8eecc47-8faf-4605-8201-48bdcfa03e4e/13441700268.pdf
    • https://s3.amazonaws.com/kitakilesa/jackson_ms_drivers_license_testing.pdf
    • https://uploads.strikinglycdn.com/files/580e8555-1f77-4e89-8d5b-cfc703e36793/71896042525.pdf
    • https://uploads.strikinglycdn.com/files/aca9b4d7-4079-4cb5-b492-56f671c08036/red_dead_redemption_2_official_guide_book.pdf
    • https://s3.amazonaws.com/zufojadibi/rugasopetusolunevexuriga.pdf
    • https://s3.amazonaws.com/rurovikejigibu/7583812894.pdf
    • http://pimifemegizak.epizy.com/blank_map_of_europe_1914.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4db.bin
1730f7af828e31f28c6a4ae14feba36613851a2195726b57bc19b995d37d6880		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4DB 4772 bytes
font_01_sfnt_off0001053b.bin
44f4fbc83a1a0b4e7461e2408914387535a25ae9dd38ef582dcdb7dd03aeab02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1053B 10612 bytes
font_02_sfnt_off00012984.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12984 4324 bytes

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