Malicious PDF — malware analysis report

Static analysis result for SHA-256 f56147bc096c95af…

MALICIOUS

PDF

89.0 KB Created: 2021-05-04 02:27:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9577ceea352fcde362eaf25e40e3692 SHA-1: 3bb3552e7b2d9953b490359ab7122f1c3168459b SHA-256: f56147bc096c95afd023d16be9d4e72cebc52077daa343c662774643332ec2fd
156 Risk Score

Malware Insights

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

The file is a PDF that contains numerous external links, with a significant number pointing to potentially malicious domains. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to drive traffic to various sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jumiwimov.ru/strik?utm_term=tom+big+al+schreiter+books+pdf
    • https://ginupegoforijef.weebly.com/uploads/1/3/4/7/134760486/mekolelawu.pdf
    • http://zisezamerares.mygamesonline.org/134895353.pdf
    • http://siwupojotuj.getenjoyment.net/47589506420.pdf
    • https://cdn.sqhk.co/gapebeve/eidaOyd/download_run_lucy_run_mod.pdf
    • https://bawilizutiv.weebly.com/uploads/1/3/4/4/134477944/tefezeguwi_febukuzalorafuj_riwetuke.pdf
    • https://cdn.sqhk.co/poronujefino/ihpgj3w/gixuze.pdf
    • https://cdn.sqhk.co/kerutadit/ahgidjh/karenufagi.pdf
    • http://legexebe.medianewsonline.com/learning_opencv_bradski.pdf
    • https://cdn.sqhk.co/jukunobegabe/ijahfjd/jimifosowokabodipitatuga.pdf
    • https://fepobiwebefu.weebly.com/uploads/1/3/4/5/134592484/zijonuvev-tutemesiwexaral-debepenerikug.pdf
    • https://kolajinetam.weebly.com/uploads/1/3/4/5/134584148/e0ba6f.pdf
    • https://cdn.sqhk.co/dowivita/ggfijSp/43256153794.pdf
    • http://fedorahosted.org/lohit
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/097a5a9f-ad2f-46d3-b866-01285b70495e/ham_without_oven_bagel.pdf
    • http://romapubimowa.onlinewebshop.net/rurufozixeduxax.pdf
    • https://44879a12-c10a-431c-a98a-7de142752d0f.filesusr.com/ugd/bb4607_b2a7d429a72f498080396ac17f05392b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/bbea29a4-f140-4c54-b00c-1f229d0d3eb5/descartes_meditation_5_sparknotes.pdf
    • https://73b3f487-90f5-41a6-bf44-750372f72efd.filesusr.com/ugd/39e8d0_34e7cbe9edc4412e8c8d3fb81e83fa24.pdf?index=true
    • https://uploads.strikinglycdn.com/files/cd396589-8587-4e13-81d1-786a11bc79f2/army_reserve_officer_pay_chart_2020.pdf
    • https://uploads.strikinglycdn.com/files/6bb3e45c-15c2-4eb3-8497-69add2250248/how_to_train_your_dragon_book_of_dragons_full_movie.pdf
    • https://uploads.strikinglycdn.com/files/7f91728e-6e3a-4a33-83b3-941869c51ca5/honda_gcv160_oil_capacity.pdf
    • https://df9240ce-57b4-430e-a582-521170ca5232.filesusr.com/ugd/10b03a_f937758a143e4c1d88db061f923464e2.pdf?index=true
    • https://uploads.strikinglycdn.com/files/908c7f5a-4689-4d7e-82cb-7b02a9cf622c/why_doesnt_my_power_washer_have_pressure.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://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00013c09.bin
64a10a238f49ff46f8e18fe2e69cd5cd56f07d47dfc0d9c478c76d3d8ba4b1cd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x13C09 7572 bytes
font_00_sfnt_off0000f348.bin
3c9e47fc51535314dabb2e5a8ce8fba2f7bc2072f6f86c4e5f89e0f58cd8ef69		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF348 5720 bytes
font_01_sfnt_off00010695.bin
e2c7bb3c6d2fbc6b9680c858ce58af9e5cd0e4fbc18f33bdd2ad1d5654d08a87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10695 3772 bytes
font_02_sfnt_off00011239.bin
c767129567c9e1814c78c756cb4bdc9c4faf483c017f2e4a9efe6ecc1151bb23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11239 13216 bytes

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