Malicious PDF — malware analysis report

Static analysis result for SHA-256 47400142c13fbb67…

MALICIOUS

PDF

81.3 KB Created: 2021-03-20 10:35:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 8b1a8c9d58164fbe8d4d6b85e8e73d17 SHA-1: d729cab0f002f1140e0c901fcc8330f22d3800a7 SHA-256: 47400142c13fbb6740fad9270806f31eb0ff007975797634249f298fd187a3ac
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or SEO spam operation designed to redirect users to potentially harmful sites. The primary malicious URL identified is https://lozipotod.ru/strik?utm_term=massey+ferguson+35+diesel+battery+size.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lozipotod.ru/strik?utm_term=massey+ferguson+35+diesel+battery+size PDF link annotation
    • https://nisikigibifug.weebly.com/uploads/1/3/0/8/130813528/tusafukutabijon.pdfIn PDF document text
    • https://wosobariwosamu.weebly.com/uploads/1/3/4/3/134372044/6f18602232.pdfIn PDF document text
    • https://namosozevo.weebly.com/uploads/1/3/0/9/130969937/digozaxigusa_munezififojumu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411479/normal_6046efa5811d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414696/normal_5ffd6553d1817.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://uploads.strikinglycdn.com/files/c6f2e77d-0dfc-41ae-a116-a171295115f7/rozowekarewikiw.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/82886228506.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7437ccb7-8a0e-474a-a477-9c9f242599df/star_wars_visual_dictionary_boba_fett.pdfIn PDF document text
    • https://d0a6b1b1-1773-4622-8b5e-0ab5990a7ed3.filesusr.com/ugd/b90ba1_d0540af07d73467180f78445945f713a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bupijila/bupebijipuraso.pdfIn PDF document text
    • https://19972ee8-34f0-4900-8009-9f590161cd02.filesusr.com/ugd/64db51_02507a18a02a4341ab14e9cbeb281c9e.pdf?index=trueIn PDF document text
    • https://84bd2c60-91d0-47b6-9565-6ae8a6593e58.filesusr.com/ugd/963627_b6a43732aa174e1081fd331052d3d403.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tezude/andres_villas_boas_scouting_report.pdfIn PDF document text
    • https://4a39c6c9-989b-4d11-b2d8-cc0becc7f193.filesusr.com/ugd/ef0078_d0074fa8790d481cb575ce78293f931e.pdf?index=trueIn PDF document text
    • https://ed36ca5d-e6e9-4caf-8bbb-3a8af5cfee16.filesusr.com/ugd/971556_84be680499254231afc467d4d4703706.pdf?index=trueIn PDF document text
    • https://dfabac9c-3a78-4d86-b112-ccf1750024e9.filesusr.com/ugd/b46e2f_982dd72b36dd46d69f7a13c7b8c30cce.pdf?index=trueIn PDF document text
    • https://5d9de69b-f80b-44d6-9c2d-9027806fef0b.filesusr.com/ugd/e26ad2_5eb58814df4544db8bb280674ccbb107.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/94130773375.pdfIn PDF document text
    • https://80b2a579-f9ed-4aa0-b91a-ac3c8973c086.filesusr.com/ugd/353d00_3b06a5ae040e4b91a5e987e5b9750653.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea6b0bf5-9b36-4564-9b84-a35246dc20b0/dewalt_20v_max_xr_hammer_drill_kit_brushless.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76960730-bc65-48f2-b054-e787f403d165/how_do_you_program_a_universal_remote_to_a_proscan_tv.pdfIn PDF document text
    • https://6674166f-eb58-46b1-9d38-a528bc95e02c.filesusr.com/ugd/e38d8e_44efc58db4b747c4b843b32e30075748.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/98e78cac-6f7d-41f7-88c5-64988a137513/how_to_edit_passport_photo_background.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/brosur_kabel_nya_supreme.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_off0000f2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DB 5540 bytes
SHA-256: 5a7b71ceeb2d1ae9a89f62e3647a9d1ab2802163fa4a1aaa9f254fb014d1e44a
font_01_sfnt_off000105d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105D5 10448 bytes
SHA-256: 518f9e83ac20cd251009c2680a90f163dfcc9a9f2190279eab31693e7c22f962
font_02_sfnt_off000129b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129B3 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71