Malicious PDF — malware analysis report

Static analysis result for SHA-256 710eece3b4932cf1…

MALICIOUS

PDF

75.8 KB Created: 2021-03-21 23:06:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 687d93801c4c67cac83fb4227dbb9c64 SHA-1: b7f8be2253253d533cf813b49d78864ee8fafcce SHA-256: 710eece3b4932cf17c4d331b403c8d6267f9c368e1b7ca1fed78fd0b4df9ef57
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for a book download, suggesting a phishing or malware distribution attempt. ClamAV and ML classifiers flagged this PDF as malicious. The presence of external URIs and the overall structure indicate an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://dafemum.ru/aws?utm_term=raymond+chandler+the+big+sleep+pdf+download
    • http://vigastlens.xyz/91640397661d244o.pdf
    • http://familyit.info/soil_water_movementqq9gt.pdf
    • https://cdn.sqhk.co/zukuxenopo/f0HhbqU/space_armada_galaxy_wars.pdf
    • https://cdn.sqhk.co/vakenuda/5ieakwb/yellow_jacket_vs_wasp_vs_hornet_vs_bee.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/58f17a80-b445-42e4-8dfd-c4cd0f6b9917/jujepekamuzuzuvod.pdf
    • https://uploads.strikinglycdn.com/files/7e992aad-0455-4a84-bce2-0e2b68360179/wijumobugokoj.pdf
    • https://s3.amazonaws.com/dusined/bodycon_dress_formal_dresses.pdf
    • https://s3.amazonaws.com/viboxikuz/aka_baddest_mp4.pdf
    • https://s3.amazonaws.com/retobifulipo/96048751640.pdf
    • https://uploads.strikinglycdn.com/files/334dc323-daf4-4b20-b41f-d9221926dab5/vizio_sound_bar_5.1_specs.pdf
    • https://s3.amazonaws.com/xozeb/wulevomotuxide.pdf
    • https://uploads.strikinglycdn.com/files/5091c611-283a-4d65-98c0-f86dfb86739b/antigone_ode_to_man_text.pdf
    • https://uploads.strikinglycdn.com/files/db0a0628-8953-497c-8362-549d06b6b2c0/41268691721.pdf
    • https://uploads.strikinglycdn.com/files/fc63b1ee-a8eb-41ae-a246-d7d34cf2fd1e/how_to_use_a_sharp_calculator_for_fractions.pdf
    • https://uploads.strikinglycdn.com/files/f0f7c63e-fd94-4469-9d5b-54acf4528c69/gawefapim.pdf
    • https://s3.amazonaws.com/bomupi/mac_emulator_for_windows_7.pdf
    • https://uploads.strikinglycdn.com/files/64fa0b31-0c70-482a-8f40-200e65a3d8f9/98664034931.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_off0000dc4c.bin
904fe4d01d809e234bed9d7d4f3e934fbab4ad9651ad3c2964faeec21fe3f731
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4C 5912 bytes
font_01_sfnt_off0000f05d.bin
3128b50ee57ec7666e2caf9618e533c0c2e512c2e488c38941094ff9b3880781
pdf-font-stream PDF embedded font (sfnt) at offset 0xF05D 16132 bytes