Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecedf3de1c0e47da…

MALICIOUS

PDF

79.4 KB Created: 2021-04-05 23:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8cc8b8d941a282580f2912dcb7304414 SHA-1: 8bedc5697ccd5cb0e577f3e0b15de4e41ffda085 SHA-256: ecedf3de1c0e47da759d76f15cbec2a04128d638bef2923de47a5e7f42a5ca7c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://leonvi.ru/123?utm_term=casteless+collective+video+songs PDF link annotation
    • http://1s.london/rowikokagotokimizabvt36.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478131/normal_6007f2d1622f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499972/normal_5ff3180987431.pdfIn PDF document text
    • http://mif-smeh.space/xujamuwewigke3x.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/fajeloninesitel/safety_first_trophy_convertible_car_seat_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1619bc7e-5ea8-43aa-ae3b-221f99653f6c/38549884583.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/sexually_transmitted_disease_surveillance_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/23322940501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27c6bed1-845e-41ea-84f3-e9d0f87ebc77/how_to_find_the_perimeter_of_two_shapes_together.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/barrows_gloves_zerker_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/rakimesuget.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/671e3c38-705d-48e6-832e-2e13055906fa/fifty_easy_classical_guitar_pieces.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/4828426682.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/the_ninth_wave_painting_original.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4885d44-b2df-486a-9c1c-aeda93022465/70835040988.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/tivomuzegumega.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00f3de36-5ccd-4aa8-8b8e-da78abcfcbe2/english_language_speaking_practice_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/31106947968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4236479a-9a67-440e-ac6b-22f6a8cefb7b/tactics_ogre_let_us_cling_together_ps1_classes.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_off0000ea0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA0E 4880 bytes
SHA-256: 6c28ada39156c9d0d22a7bbd058942cca332d5155fae9aa8d6fade4f3bd1ac88
font_01_sfnt_off0000fabc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFABC 11716 bytes
SHA-256: 96bbd16877a078f2d5dc90e8aaf5eb1cdb04f8b582caa5d77e8b0a6e33c5dec7
font_02_sfnt_off00012248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12248 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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