Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5a20496c5e35180…

MALICIOUS

PDF

79.9 KB Created: 2021-03-22 14:40:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: d5ba1209d2ffd41772c547d92e728ef8 SHA-1: 9adf10a0e36169386bd07ac01580a1335537cdda SHA-256: c5a20496c5e3518046d13fc0f38641be52eb74cd378b30ea4873e99df21afac7
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL pointing to a site related to Amazon credit cards, suggesting a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are consistent with phishing campaigns that often leverage JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/wix?keyword=amazon+credit+card+credit+score PDF link annotation
    • http://center-san.ru/adobe_premiere_pro_cc_2017_user_guidehctm2.pdfIn PDF document text
    • http://afterdealer.pro/fogagenagiwububi37842.pdfIn PDF document text
    • http://jokerisirefole.22web.org/head_first_android_development_a_brain-friendly_guide_2nd_edition_download.pdfIn PDF document text
    • http://muldwych.com/operation_market_garden_booklrvcy.pdfIn PDF document text
    • http://tuwafanumi.iblogger.org/cardiff_sixth_form_college_international_students.pdfIn PDF document text
    • http://invitesistem.ru/3691501312o7tvc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://juvokumepi.rf.gd/dmlt_biochemistry_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a591102-09f3-434e-b441-459c4dab6d28/jajepax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10934987-1b54-4999-81bb-5d8adf9dbc7f/what_are_the_different_types_of_loops_in_python.pdfIn PDF document text
    • https://69b3109a-7cce-4514-9193-d2106d9976ab.filesusr.com/ugd/3c2969_0c9682c1c2194bde91f015b0ef2da76a.pdf?index=trueIn PDF document text
    • http://zubaxajetalomu.rf.gd/werexuposovafi.pdfIn PDF document text
    • https://b56e00ce-d729-42e9-814b-b9a4b194f5ba.filesusr.com/ugd/f6f93f_da88c965e30546bab4c78cb1921ec5cf.pdf?index=trueIn PDF document text
    • http://buxazub.epizy.com/97664829315.pdfIn PDF document text
    • http://jimavuzeladones.epizy.com/sweatcoin_apk_old_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e100d94e-49de-4f1b-9585-05574fc5e7e5/90304747389.pdfIn PDF document text
    • https://2080fafa-2491-4ac3-8118-a138f33bff34.filesusr.com/ugd/822ecd_990dc98b18a84c269f47c7a1e80007a5.pdf?index=trueIn PDF document text
    • http://ribebipewafiwas.epizy.com/looksmax_guide_lookism.pdfIn PDF document text
    • http://sasuwirakib.rf.gd/69388562020.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/scientific_names_of_flowers.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/avery_laser_labels_5267_template.pdfIn PDF document text
    • http://zegegapo.rf.gd/self_study_matlab_kya_hota_hai.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/giburabusovimafuxejigopof.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_off0000fa20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA20 5092 bytes
SHA-256: 64b0376a0019b386ea889c4a59e86e98849442a85d97fad2df9b86d92175b43e
font_01_sfnt_off00010b57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B57 11512 bytes
SHA-256: 555d30e997fffe918a8a27061dfafa8730aaad0b1c703f34c0345f17b153ac2f

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