Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d56096fbcc22dd7…

MALICIOUS

PDF

92.0 KB Created: 2021-03-05 09:08:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9776bb502fef1d24b0e20081b095edd4 SHA-1: 42f024a02dba24a99b7f2debaefffc6e80dd568a SHA-256: 0d56096fbcc22dd7681eaf691f053615532c53d33ab1cdfba3b2ba38b67bc00b
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or SEO poisoning tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. The embedded URLs likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 6

  • 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.
  • 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://maypoin.ru/award?keyword=how+to+remove+print+head+epson+1400 PDF link annotation
    • https://cdn.sqhk.co/mavixuwaloz/johijhV/probleme_mit_amazon_gutschein_code_nicht_lesbar.pdfIn PDF document text
    • https://xaleratugigajij.weebly.com/uploads/1/3/4/6/134631249/ripowoxubofalotemawa.pdfIn PDF document text
    • https://wisetigu.weebly.com/uploads/1/3/4/3/134357320/titib_zadafekizep_vasuvuwa_bokitexa.pdfIn PDF document text
    • https://nonedavoxezi.weebly.com/uploads/1/3/5/9/135956696/gupuxogop-sizoj.pdfIn PDF document text
    • http://supariwepexafat.mywebcommunity.org/88259170006.pdfIn PDF document text
    • https://cdn.sqhk.co/xexogataza/gghchic/kegusujutevimere.pdfIn PDF document text
    • https://likunemotiro.weebly.com/uploads/1/3/5/2/135299998/fowazubod_vunojowifo_bitakowigezoz.pdfIn PDF document text
    • https://rasetakewalufil.weebly.com/uploads/1/3/6/0/136086978/fb9185947f37638.pdfIn PDF document text
    • https://bokakarepexopo.weebly.com/uploads/1/3/4/7/134750167/wafizeregi.pdfIn PDF document text
    • https://cdn.sqhk.co/wixedineve/hhnMAhb/derofi.pdfIn PDF document text
    • https://piwaxokireruber.weebly.com/uploads/1/3/0/9/130969414/lebudafokituxawupi.pdfIn PDF document text
    • https://topalezomezo.weebly.com/uploads/1/3/4/3/134305389/wejafuluzosimobizef.pdfIn PDF document text
    • https://cdn.sqhk.co/gafisasiwu/iiibGoN/best_free_music_ringtone_app_for_iphone.pdfIn PDF document text
    • http://zijixiteluwek.scienceontheweb.net/embedded_software_testing_tools_list.pdfIn PDF document text
    • https://vezutokabev.weebly.com/uploads/1/3/4/7/134758566/9150531.pdfIn PDF document text
    • http://sugameloxufe.mywebcommunity.org/how_to_reverse_search_image_google.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d8d691c7-cf48-432b-bece-a54604b57851.filesusr.com/ugd/1e3a4b_4dc5b42d2550438aaa62d4c2ddfe186e.pdf?index=trueIn PDF document text
    • https://c580675e-8888-491d-8c80-3106eaac86fb.filesusr.com/ugd/c8a981_01e295ead60c492e90ed482b654ed415.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/152ae35f-eaa3-4460-9aef-7dbd38759b83/what_is_a_sentence_for_daybed.pdfIn PDF document text
    • https://c3373aeb-ed74-4f2d-b631-fa679e0a3f6f.filesusr.com/ugd/cbe7f7_c3c431a1241248449c8ce2cc5b8dfcdf.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bca9884-073c-4e99-a255-9be097f4a50b/how_much_can_a_ford_ranger_tow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/391d5cdb-3b19-47fa-aa84-96673a0e61ca/31433426451.pdfIn PDF document text
    • https://932aa67c-856a-4fda-9fc8-fe3f50d4acc2.filesusr.com/ugd/a25eee_970b8a4a8a1a4f59984d88e6759f7348.pdf?index=trueIn PDF document text
    • https://f8071fb1-33dc-4bb9-9fe9-292e0ca0d861.filesusr.com/ugd/253000_854523be13e649a9826387f4eaa82f52.pdf?index=trueIn 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_off00011aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AA5 4620 bytes
SHA-256: 86d389a9093f01b50d35bab96349e78973fc40daa2595f03f12bc670b92ab155
font_01_sfnt_off00012ae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AE9 5564 bytes
SHA-256: fb8203ed166dceb2a2b12fe9447370db83c6d8dfc449e55d819c8b17f4207a27
font_02_sfnt_off00013dc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DC3 10600 bytes
SHA-256: cf067208bf8c3e536da9c147ca631e8d9c2111452574a1fbae38be28c708dd4d