Malicious PDF — malware analysis report

Static analysis result for SHA-256 acbebfa903fc52c0…

MALICIOUS

PDF

91.7 KB Created: 2021-05-09 04:32:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 1dc9abb3d5fd2c5c167d08c0299461ab SHA-1: ea6b618ca318ac6b2cbb0f601d34e2591ad32853 SHA-256: acbebfa903fc52c0155265833d62bd173238867d8d65dac2460ebe7ca2a17830
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is a common tactic for phishing attacks. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URL suggest it's designed to lead the user to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=dell+battery+not+charging+blinking+orange In PDF document text
    • https://cdn.sqhk.co/rapigufagi/fUwzFjc/fundamental_definition_physics.pdfIn PDF document text
    • https://cdn.sqhk.co/dajuzafum/ichcjhb/5058801149.pdfIn PDF document text
    • https://cdn.sqhk.co/sebutarukaw/eo6uBgg/sagirutuwutiginowubekezo.pdfIn PDF document text
    • https://cdn.sqhk.co/nugutobudan/ZXkjfhd/biwixunaki.pdfIn PDF document text
    • https://cdn.sqhk.co/lijipatalenu/ihhio0D/suntze_art_of_war_narration_approach.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarimeg/mihoPhj/sonic_4_ep_1_mod_apk_data.pdfIn PDF document text
    • https://cdn.sqhk.co/xakelafu/jeigjN7/car_simulator_clip_download_android.pdfIn PDF document text
    • https://cdn.sqhk.co/xejadukoxeta/gcFcRja/nanofukotisateja.pdfIn PDF document text
    • https://cdn.sqhk.co/gubisagebuto/BgfIPiG/little_alchemist_knowledge_combos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/what_are_some_business_ideas_for_bloxburg.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/86893155859.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7494e13-cc68-450b-9c1c-7ad401e16b4e/38252680163.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/825385dd-0729-47ba-afde-9147b6b0bc73/xekuriwavevurovaf.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/keurig_2.0_k250_water_filter_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/93564015690.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1be82b4e-387c-469e-b598-4e08bf6fa9d3/jimomefoxabawa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2e5a03c-6129-42e4-88d9-e883373d98e9/what_causes_itchy_irritated_scalp.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/amathanna_song_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42698f87-8a95-4499-b17b-023b6029e20d/burger_king_allergy.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/windows_keyboard_commands_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1160f8d2-86b4-46ed-bcb6-324f0a8969f9/70809800526.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011b9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B9E 4976 bytes
SHA-256: 2e3a3eea82636c7bdec368f8c9a0b5701dc7df42c5798694e015fc414b5f67ce
font_01_sfnt_off00012c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C86 11424 bytes
SHA-256: 5277ac11160f25a35a6dc0fa989efe4a80ce09a4055b301bc5f08fb7bdaa2932
font_02_sfnt_off000152fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152FA 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

Open this report in the interactive analyzer, or submit your own file for analysis.