Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd5dcc982378a1e0…

MALICIOUS

PDF

72.9 KB Created: 2021-04-05 06:52:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: cf36c011f781b3d98f7020855e616deb SHA-1: 1e51770d3b6027c3d057f157f1d39b6e45eee269 SHA-256: dd5dcc982378a1e04b54d4984c7dc6c4268686d003c8b7c5a6567788971347c2
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many of which point to unknown domains, suggesting a link farm or redirection mechanism for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://load-bcp.com/yaesu_vx-8_price49pae.pdf In PDF document text
    • http://calipshatngaccs1.xyz/gubirelanemetsvx2.pdfIn PDF document text
    • http://cardio-active.site/87689853057jbv60.pdfIn PDF document text
    • http://kikifikoxije.mypressonline.com/accounting_standards_ca_ipcc.pdfIn PDF document text
    • http://lisolu.org/91096172740rkajk.pdfIn PDF document text
    • http://tilosag.mypressonline.com/carcinoma_epidermoide_histopatologia.pdfIn PDF document text
    • http://peguxukeziku.sportsontheweb.net/xeziripepudebitarewuwen.pdfIn PDF document text
    • http://itsnat.space/how_to_ground_pound_in_super_mario_sunshine_on_switcha499q.pdfIn PDF document text
    • http://woodlesenka.ru/the_five_love_languages_what_are_they7yjot.pdfIn PDF document text
    • http://reduslimitalia-oficial.site/military_course_codeag9pu.pdfIn PDF document text
    • http://sallehub.xyz/sagowikirukolejepiruiv9jt.pdfIn PDF document text
    • http://sodalabs.club/competition_law_reform_australia8ipwn.pdfIn PDF document text
    • http://homearfes.com/dell_e6410_laptop_pricep9gph.pdfIn PDF document text
    • http://com-signto6.xyz/free_powerpoint_cycle_diagram_templatetsdcc.pdfIn PDF document text
    • http://lnstagram-helps-contact.com/guvanezimajevejis5nkv.pdfIn PDF document text
    • http://lnstagramsupportlives.com/22287897246zfcrz.pdfIn PDF document text
    • http://circulshtangcalip.website/lakubabibebujig0drb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/4NO0L8wlyOA/wb?keyword=endocrine%20system%202.3%201%20hbs%20concept%20mapPDF link annotation
    • http://vidugozu.atwebpages.com/gagekab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68933d1a-0761-4008-b0d7-25951c1357cf/online_english_speaking_chat_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e41a720-0e23-4727-8720-0eec63a01b96/can_you_get_a_cat_fixed_for_free.pdfIn PDF document text
    • http://semowomeso.onlinewebshop.net/zijewafenajowil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8d3294d-09ba-4eae-87eb-389346713ed8/sony_a3000_camera_specifications.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_off0000ddba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBA 5860 bytes
SHA-256: e197cd3b983661b00db3e245303a39a097ca24c064ea3b6208ff7581add92f54
font_01_sfnt_off0000f18b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF18B 10244 bytes
SHA-256: 434d4d924ad6b85373bbb334ddfcf19c1f8cfb3726b217a83a6c853316d86ca1

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