Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e3b28e64b2846e5…

MALICIOUS

PDF

78.1 KB Created: 2021-04-02 19:39:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 284ab23074ebf6c7bbd66b6ce4cc9fed SHA-1: 850b7537555442c31ed9382198e8a6d946d6c4fe SHA-256: 7e3b28e64b2846e59eebfd1ceb490ec7bdceb022cd5da43f2179a1acaa39ac4c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to multiple disposable domains, with a primary lure related to battery charger instructions. The embedded URLs suggest an attempt to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/strik?utm_term=how+to+make+a+lithium+ion+battery+charger PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451217/normal_603c47811e961.pdfIn PDF document text
    • http://instasale.company/47352684534utotc.pdfIn PDF document text
    • https://cdn.sqhk.co/lanuniwa/jIgfATu/ice_cream_2_horror_game_free_download.pdfIn PDF document text
    • http://slmit.fun/definicion_de_enfermedad_segun_autoresdjxt2.pdfIn PDF document text
    • http://lnstagramoriginal.com/zudiwiwedusikupof6hun8.pdfIn PDF document text
    • https://cdn.sqhk.co/miwavilusaji/Q0haam9/descargar_hamachi_64_bits_windows_10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500429/normal_600cbc35923f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403119/normal_60376a0a99aaa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447669/normal_5ff873e0a1676.pdfIn PDF document text
    • https://cdn.sqhk.co/wazilisiko/djhibic/pafitexosakenubu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445879/normal_5fdbe8d25b3d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383928/normal_5feeca77128d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484807/normal_5fd7708e348e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461249/normal_5ffc960ba15e9.pdfIn PDF document text
    • https://cdn.sqhk.co/zetobazox/dhiPXji/53991713814.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1249fae3-8b91-40d6-9027-fc37bba52b6e/otterbox_samsung_galaxy_s9_plus_case_symmetry_-_clear.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/499c9487-1198-4ab1-af97-9cef77fed433/nanozino.pdfIn PDF document text
    • http://kujojeg.rf.gd/retrospective_meeting_questions_and_answers.pdfIn PDF document text
    • http://remekos.rf.gd/gewaximuxanukoguredile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e3da1f9-8d5a-4b98-8d46-fd2436c4e2b1/gonivox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25e5dab1-e753-4e81-aa19-e1762eff3016/lord_of_the_rings_directors_cut_where_to_watch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55c406f7-99cd-40be-af13-68813367eaf4/when_to_use_spell_save_dc.pdfIn PDF document text
    • http://moxawaten.epizy.com/react_redux_ecommerce_template.pdfIn PDF document text
    • http://xovanesoku.epizy.com/americo_castro_espana_en_su_historia.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f35d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35D 5392 bytes
SHA-256: 8ab580a92093d62ce29d1f0677dc2c9460fd1bd212e48c271cf7462cfb3cd712
font_01_sfnt_off0001059f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1059F 10644 bytes
SHA-256: c6b64628fdb8c132b4ff85cec899ed85a0754631b4ab93d4fcdb2d0a84015f82

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