Malicious PDF — malware analysis report

Static analysis result for SHA-256 e229a9a6a70e7d3d…

MALICIOUS

PDF

71.8 KB Created: 2021-06-13 20:30:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0c0e7b3f297ebd62a4cd515f0b59197 SHA-1: d06e5daa3156db7145c08f1dbea41bd543223277 SHA-256: e229a9a6a70e7d3d11bcde103dbeb8eff373f693efc9d4206e394dff02a866ee
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a domain associated with potentially unwanted or malicious software downloads, specifically a 'lightroom premium mod apk'. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to trick users into downloading further content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://coretry.ru/pbw?utm_term=lightroom+premium+mod+apk+full+preset+2020
    • https://cdn-cms.f-static.net/uploads/4380223/normal_60c4ea65e3728.pdf
    • https://cdn-cms.f-static.net/uploads/4412391/normal_6056a7c894f5e.pdf
    • https://static.s123-cdn-static.com/uploads/4425917/normal_5ffce35ddcc03.pdf
    • https://puwulafu.weebly.com/uploads/1/3/5/3/135329465/ed7f8beb0a25.pdf
    • https://cdn-cms.f-static.net/uploads/4461505/normal_604da5d898507.pdf
    • https://tezefidusipenu.weebly.com/uploads/1/3/1/8/131857758/5943331.pdf
    • https://cdn-cms.f-static.net/uploads/4393776/normal_60184ee052c8c.pdf
    • https://fitezaxuju.weebly.com/uploads/1/3/4/7/134724711/8afe79416f286.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/baa20e41-2bd1-421d-b8a8-7590fcff0353/baxid.pdf
    • http://zuvuwiro.pbworks.com/w/file/fetch/144730239/13094787306.pdf
    • http://bojifimaral.pbworks.com/f/denozobujajiwir.pdf
    • http://bekojifutok.pbworks.com/f/supiwebitugoti.pdf
    • http://zopujoxobug.pbworks.com/w/file/fetch/144424101/cellular_respiration_grade_11_questions.pdf
    • http://goferupemo.pbworks.com/f/the_final_destination_5_full_movie_download_hd_bluray_dual_audio.pdf
    • https://uploads.strikinglycdn.com/files/901bf5a6-2948-4efa-99e4-3baaf8239cab/kijasa.pdf
    • https://uploads.strikinglycdn.com/files/1a856b99-d531-41b7-b3b1-842dbd51c05a/47104792800.pdf
    • https://uploads.strikinglycdn.com/files/31b3b330-ff00-4162-bed9-9429605fed6f/horton_hears_a_who_katie_smiling.pdf
    • http://niraxaba.pbworks.com/w/file/fetch/144912876/latest_gk_questions_with_answers.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_off0000db60.bin
448886660318e8727d9ad4bcd9b057da6dc387dd203ef037480be8be1aada64c
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB60 5732 bytes
font_01_sfnt_off0000eeb9.bin
0c079135db1f3e182395ca661169ed9fc461a7c07bf47ccbe6ae8a3dd340385b
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB9 9812 bytes