Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d9565ba5d3348bc…

MALICIOUS

PDF

70.1 KB Created: 2021-04-01 11:42:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1547c9da4784608aaf2711d83f07ca8 SHA-1: 9a61073611e17c0110444ba65bc18586cb70a08d SHA-256: 7d9565ba5d3348bc64f0daf9f079c11a8cb8f762df1cabc6615983e96dded26a
96 Risk Score

Malware Insights

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

The file is a PDF that contains multiple embedded URLs, with one specifically identified as a potential lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs suggests an attempt to redirect the user to malicious sites, likely for phishing or to download further payloads.

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://bologen.ru/wix?keyword=wind+worksheets+2nd+grade
    • http://neuroncraft.online/rumekuxt6g4d.pdf
    • http://scarcebook.com/la_momia_regresa_peliculakyu45.pdf
    • http://preplafond.xyz/20769336912es0g.pdf
    • http://islemleriniz.org/4779210147197ypu.pdf
    • https://cdn.sqhk.co/ropikenetu/hbsfap2/after_world_war_1_the_us_senate.pdf
    • https://cdn.sqhk.co/baxotonad/cogjvhJ/9905805294.pdf
    • http://dk-inc.xyz/ar_camera_apk_mod9ozzh.pdf
    • https://welirupew.weebly.com/uploads/1/3/4/6/134662060/4521913ca4f5.pdf
    • https://cdn-cms.f-static.net/uploads/4387924/normal_60501acc611a2.pdf
    • https://cdn-cms.f-static.net/uploads/4490272/normal_6064fc5fb7f46.pdf
    • http://hookup757.fun/how_to_set_up_plantronics_wireless_headset_c052jpcrd.pdf
    • https://cdn.sqhk.co/bapisolel/igicZFp/photo_editor_online_free_image_editing_background_change.pdf
    • https://cdn.sqhk.co/zomulusiku/jVEahjT/super_king_flannelette_sheets_target.pdf
    • http://epipog.com/sisavinojilemiwakupinurb4leh.pdf
    • https://cdn.sqhk.co/wimiwupo/ygiLiig/25612514728.pdf
    • https://gejamuxubidiz.weebly.com/uploads/1/3/4/6/134688077/2259492.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://3568c1c9-c281-4b9a-9ea9-d5d291e0176b.filesusr.com/ugd/e5d8db_0affdc42b4184ed38d91d67635c6cd15.pdf?index=true
    • https://9ef77391-fdd1-48d8-ba15-364b07375333.filesusr.com/ugd/ebefdf_61bf988b0fc9498382709b17796d9e27.pdf?index=true
    • https://c370dac7-4848-4fa0-a6df-94361299e8ba.filesusr.com/ugd/fa6303_b91f1fde0d4745adacde646c4f6d5b43.pdf?index=true
    • https://d6d3a1c5-32ce-46e9-ae92-c5b8d84d65d9.filesusr.com/ugd/a3b54b_6371b3e18f564871b72e29e87a4dfb30.pdf?index=true
    • 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_off0000d64f.bin
1a25728797cf7fa3c8fff442f30b64dc5545f7e46c88180616226441c68ec6c5
pdf-font-stream PDF embedded font (sfnt) at offset 0xD64F 5356 bytes
font_01_sfnt_off0000e89c.bin
7feb0d56a156022e6d66470e5c937985ef7680bcd88563ebef4c9af24e1db883
pdf-font-stream PDF embedded font (sfnt) at offset 0xE89C 10592 bytes