Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb1c8e06d11c9680…

MALICIOUS

PDF

95.7 KB Created: 2021-03-24 03:14:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7374dc5ee3467542d99db796a460498f SHA-1: 102d8c78ad949d59c636a229c8a7e2142e431c0c SHA-256: eb1c8e06d11c968064c7271ee1e11ce99fb195ae42de16852e90eaafa2ea8603
116 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and a medium heuristic indicating a callback phishing lure. The ML classifier also assigned a very high probability of maliciousness. While no scripts were extracted, the presence of embedded URLs suggests an attempt to redirect the user to malicious content or phishing sites. The document body contains garbled text, but the heuristic 'SE_CALLBACK_LURE' strongly suggests the intent is to trick the user into making a phone call.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://nipisod.ru/wix?keyword=shaun+hadsall+pdf PDF link annotation
    • http://gamedv.design/civil_engineering_reference_manual_17th_editionixgsb.pdfIn PDF document text
    • https://gikositaga.weebly.com/uploads/1/3/4/7/134773380/296e2e9.pdfIn PDF document text
    • http://kuwazomo.iblogger.org/which_split_ac_is_best_in_india_1.5_ton_with_price.pdfIn PDF document text
    • http://creditactive.info/vogosasofituq0mxk.pdfIn PDF document text
    • https://wumefabifu.weebly.com/uploads/1/3/4/8/134888429/pifovugazemup-sekike-sifetajafena.pdfIn PDF document text
    • https://disadoxamegipu.weebly.com/uploads/1/3/4/5/134527150/150633.pdfIn PDF document text
    • http://reactivaperu-viabcpi.com/does_comcast_charge_for_cable_boxp84oz.pdfIn PDF document text
    • http://theharaka.online/8074480870872g6l.pdfIn PDF document text
    • http://shoppermarket.online/zadoxapx58o.pdfIn PDF document text
    • https://ganulexotugoris.weebly.com/uploads/1/3/1/1/131164012/5694a28bf14f8e.pdfIn PDF document text
    • https://nawawedivoxoni.weebly.com/uploads/1/3/4/7/134719505/lojowukavogup.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/figidireki/20662364700.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fdde096-b233-453a-a35f-7717d5d92ef0/24281098503.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/pevotojirobe.pdfIn PDF document text
    • http://putiremupupunis.epizy.com/vaaste_video_song_3gp.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/how_do_i_sync_my_fitbit_charge_hr_to_my_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40d4615d-7df4-433f-a03b-290bc94afc6d/85858695175.pdfIn PDF document text
    • http://wesofidufu.rf.gd/lexus_rx_350_lease_miami.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/where_is_the_revenant_supposed_to_take_place.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_off00013480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13480 5136 bytes
SHA-256: 0365671d943f701512b33379aa2560269caac7418c2e3e66339ccb05bd1a1ae4
font_01_sfnt_off000145f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145F9 12432 bytes
SHA-256: ba86443431794900db49dd696caf9a5a59f23812d81b0e45f1d73d1541d2ce5b

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