Malicious PDF — malware analysis report

Static analysis result for SHA-256 d960297db68b97cc…

MALICIOUS

PDF

79.6 KB Created: 2021-04-30 08:31:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5ce27d9759b848b7aaa63a6cb6fa2b3f SHA-1: 2224044105365f4850aa349462246b60a6eeeff8 SHA-256: d960297db68b97cc19ca3d10a05c06d240024ffebec2fcd02ba38e03876c235e
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are to potentially malicious domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV also flagged this PDF as malicious, suggesting it's part of a phishing or malware distribution campaign. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://xajibur.ru/strik?utm_term=brother+pe770+embroidery+machine+needles PDF link annotation
    • https://lozugukavokukes.weebly.com/uploads/1/3/4/3/134357100/3097474.pdfIn PDF document text
    • https://zukodefikarux.weebly.com/uploads/1/3/4/4/134498552/483a143503c3a.pdfIn PDF document text
    • https://dutosagow.weebly.com/uploads/1/3/0/7/130775111/14255.pdfIn PDF document text
    • http://mavedelusudefiv.22web.org/resignation_letter_including_annual_leave_template.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/bf03ab48-5c8a-428a-a70d-f64d874bf333/metal_gear_solid_5_update_2021.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/65864298192.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/72410665798.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/34361751128.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/zepogiremipugipolawo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78ed380c-399b-4935-abb5-c3c8e3780883/culinary_arts_lesson_plans_for_high_school_students.pdfIn PDF document text
    • http://wuxanewelupeluv.epizy.com/can_adobe_acrobat_reader_convert_to_word.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fbe4710-e6d5-4e36-ac98-5e1a78750e4d/critique_of_practical_reason_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/77331820793.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b901aa90-a4ca-4d1a-86ec-7e393d78dd1c/singer_profinish_serger_needles.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/vsco_apk_mod_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/integral_sin4_x_cos3_x_dx.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/47474167207.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6081d4a0-a10b-4124-97f5-df0b289f3e6f/74511146034.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/gubukefarepe.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/kudoked.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8EC 5612 bytes
SHA-256: 7c9f1a2b4c06b0a8eae186eee8fcce2205ba8c19eaa7ac2fe5189f463077bd36
font_01_sfnt_off0000fbd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD9 11064 bytes
SHA-256: 7a1fc72ac91869619694fb4a2b373c2b3e6d78b34d168eed159da7fe6d4f8764
font_02_sfnt_off00012140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12140 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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