Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f14dc94840fe595…

MALICIOUS

PDF

99.0 KB Created: 2021-03-24 23:17:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49f4140ef2a86279f0b815830fd7f722 SHA-1: d939481cc80b37efb60a9c8059d1b05d49613601 SHA-256: 7f14dc94840fe595d949454e11d8982a765117e51f721307313e1a97bb3aa54e
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with a critical heuristic identifying it as a PDF link farm. The primary URL, 'https://xezojetit.ru/wix?keyword=aa+number+after+trillion', and other linked PDFs suggest a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • 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://xezojetit.ru/wix?keyword=aa+number+after+trillion
    • https://cdn.sqhk.co/bomumuxa/djfOeji/60282310561.pdf
    • http://espacecmb.xyz/8690807709441l40.pdf
    • http://rasprodavaika.ru/que_es_una_llanta_tubelessd3cnt.pdf
    • http://pek-24.cc/mossberg_930_spx_tactical_accessoriesf54tr.pdf
    • http://reetodo.online/dokobizajadujebemo6342m.pdf
    • https://cdn.sqhk.co/nezazexador/jejjboL/asphalt_7_apk_indir_android_oyun_club.pdf
    • https://togazozaxezux.weebly.com/uploads/1/3/1/6/131606461/8a9f1450.pdf
    • http://medyahanem.com/contagious_free_downloady5cot.pdf
    • https://cdn.sqhk.co/vewukiziwemi/8GbphiR/bloons_tower_defense_5_kongregate.pdf
    • https://ganepivojo.weebly.com/uploads/1/3/4/7/134774155/aa3a96c6e0.pdf
    • https://cdn.sqhk.co/letarezetap/CKsihKb/40504930244.pdf
    • https://vipegiwofavagob.weebly.com/uploads/1/3/5/3/135302795/baff076d.pdf
    • https://wexivupesowapab.weebly.com/uploads/1/3/2/7/132712225/327113f959cac6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://4f65703b-d4c0-4c9c-9e30-73c8cc83ec5d.filesusr.com/ugd/54fa57_460e25bc2c7c4ebea55e6ff32ed17dfa.pdf?index=true
    • https://s3.amazonaws.com/lusegokaves/mandatory_abuse_reporter_training_iowa.pdf
    • https://e61e9f85-32c5-4861-9fd4-b89109084c35.filesusr.com/ugd/2e4eb4_18e929e477254676a3f680fcabe50f62.pdf?index=true
    • https://s3.amazonaws.com/dowesitobuga/can_you_eat_salmon_on_hcg_phase_2.pdf
    • https://ed4d48c2-14ea-47f5-a89a-b82193587323.filesusr.com/ugd/8ce377_1b966ec12fac43f3b09a42a67ce8479a.pdf?index=true
    • https://d45380bd-a93d-4ef2-b2bd-4c7806d1f6db.filesusr.com/ugd/5d2cf3_83e392e8ba924861a133b9d4f9b6a505.pdf?index=true
    • https://s3.amazonaws.com/lakadutof/additional_information_resume_sample.pdf
    • https://s3.amazonaws.com/solonebosop/93989268959.pdf
    • https://7fd672c9-0ac8-42d3-9d3c-9ebb2fbea2b4.filesusr.com/ugd/92785a_a04cb935d5804fc5b26729e930dd49fa.pdf?index=true
    • https://s3.amazonaws.com/rodigapigeta/cartoon_movies_online_free.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012d98.bin
a43909f030e5644881237f7ca3cab570caed44b777ec51aad2f2c1b3be6b2cf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D98 4864 bytes
font_01_sfnt_off00013e11.bin
6b36e057e37258f22ff68ef028f00dbc0e775ffb35efc7aee708c8bed65dd8c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E11 12992 bytes
font_02_sfnt_off00016916.bin
29f8f2483318468c73b99d85e449595a27beea70a87d08b11401f6d518aa5fd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16916 16168 bytes

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