Malicious PDF — malware analysis report

Static analysis result for SHA-256 dafb3468670fc0c0…

MALICIOUS

PDF

78.2 KB Created: 2021-02-21 02:39:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: bc5c6f3b58b8e674e49beb9facb1337a SHA-1: 22e4d957b88f781131bae86709d452f53a084e42 SHA-256: dafb3468670fc0c027c58a9df4c21550f25280afb0ad8f43ac89cbba67dc7ce8
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of numerous embedded URLs, many pointing to disposable domains and link farms, suggests a phishing or malware distribution campaign. While no scripts were explicitly extracted, the PDF structure and embedded links are consistent with techniques used to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/123?utm_term=are+jack+reacher+movies+on+netflix PDF link annotation
    • http://xajoraxi.22web.org/king_of_the_road_guitar_sheet_music.pdfIn PDF document text
    • https://rinavufapakoto.weebly.com/uploads/1/3/4/4/134460237/9496438.pdfIn PDF document text
    • https://fexasesari.weebly.com/uploads/1/3/1/0/131070539/8f0aec839b38280.pdfIn PDF document text
    • http://kasijeran.iblogger.org/curved_corrugated_roofing_sheets_uk.pdfIn PDF document text
    • https://falojaba.weebly.com/uploads/1/3/0/7/130776150/wurik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381531/normal_5fe63220f10fd.pdfIn PDF document text
    • https://renokiva.weebly.com/uploads/1/3/4/3/134353994/vovufowudiduru.pdfIn PDF document text
    • https://tuwowezofe.weebly.com/uploads/1/3/0/7/130775341/jawosogik-bojofabalaje-gazuso-lovezegedo.pdfIn PDF document text
    • http://damodudajipofem.22web.org/56193535246.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402938/normal_60152c29dfdd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374380/normal_602906d835e41.pdfIn PDF document text
    • https://fejamelaluboj.weebly.com/uploads/1/3/4/3/134311679/9080893.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vutakeba.epizy.com/52056321680.pdfIn PDF document text
    • http://noluboxemefosa.epizy.com/sibeduzodekagur.pdfIn PDF document text
    • http://gametusepezuka.rf.gd/police_accident_report_nyc.pdfIn PDF document text
    • http://ketugida.rf.gd/7187561985.pdfIn PDF document text
    • http://xoxexanizeb.epizy.com/zebide.pdfIn PDF document text
    • http://joxumokuri.epizy.com/bts_guidelines_community_acquired_pneumonia_in_adults.pdfIn PDF document text
    • http://voxibamad.epizy.com/android_tv_os_launcher_apk.pdfIn PDF document text
    • http://pakoxerevigere.epizy.com/banting_orange_list_2019.pdfIn PDF document text
    • http://gojejamajutemus.epizy.com/artillery_report_command.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_off0000f26f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF26F 5380 bytes
SHA-256: fb6e1f659c4122329e982368756220c9fac25f75e1eba9eb8cc279b1a24865a1
font_01_sfnt_off0001049f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1049F 11224 bytes
SHA-256: ec03461c8b3b0e21e49655e0295119e03da0710a22e4b25870e425009498e90d

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