Malicious PDF — malware analysis report

Static analysis result for SHA-256 32d78b3a1755926d…

MALICIOUS

PDF

72.1 KB Created: 2021-03-09 11:59:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: ec07afafb77aad4fd1490db93c60cc10 SHA-1: bfec2b1af94e3a342c6a9773d56dd7932f9b0dfe SHA-256: 32d78b3a1755926db9802e63c1e7221110b014cf6b79e47d9fac03d78048af8b
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a primary focus on directing the user to 'maypoin.ru' under the guise of a pharmacy application download. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for such lures. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious classification. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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://maypoin.ru/award?keyword=computer+application+in+pharmacy+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368244/normal_603a5ae39ed58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388614/normal_5fdc222f24bc1.pdfIn PDF document text
    • https://cdn.sqhk.co/binebelezux/cvgfJhc/78722777007.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474979/normal_60347dd06caa5.pdfIn PDF document text
    • http://gitikevajup.iblogger.org/cyberpunk_2077_ps5_review_ign.pdfIn PDF document text
    • http://taxafig.66ghz.com/xenulodedesopagimuvaro.pdfIn PDF document text
    • http://diwokaxojizo.iblogger.org/1001_arabian_nights_in_hindi.pdfIn PDF document text
    • http://muziwavesos.iblogger.org/12787932550.pdfIn PDF document text
    • https://cdn.sqhk.co/zeliravepuj/ghjaheL/huntington_mobile_app_login.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vagujawub.epizy.com/fosijapidovibopotumurugu.pdfIn PDF document text
    • http://texomonimumoxeb.rf.gd/tai_chi_lessons_online_free.pdfIn PDF document text
    • https://2903667b-e544-4972-ac7f-e5855aaa9b37.filesusr.com/ugd/2cc660_3709f82f4c22445f90521622b789142d.pdf?index=trueIn PDF document text
    • https://720c7b34-a033-4bf0-83ea-6be17de98aa2.filesusr.com/ugd/03ef8e_07637e1eb240434999a94d837aeb7127.pdf?index=trueIn PDF document text
    • https://5090c2af-253d-40c3-bfb7-942fc6db26b0.filesusr.com/ugd/0511f5_848d7df8a5d7442e914201c5a199d336.pdf?index=trueIn PDF document text
    • https://9387bd13-3746-4408-b474-2867f26e464d.filesusr.com/ugd/ace02d_f78129e14aaf4ed1a705d5f812b52ed4.pdf?index=trueIn PDF document text
    • https://ca483b97-61ac-4196-bca0-6b249c18eca9.filesusr.com/ugd/b27199_48ebabf45a5644a4a18dce5419731e0f.pdf?index=trueIn PDF document text
    • https://1afae0f6-9e35-4dc9-9db7-5dbf78511926.filesusr.com/ugd/afe78f_4e25c275f98748469ab4db8f5b6d63ec.pdf?index=trueIn PDF document text
    • https://ccd4a2e6-63e2-4dcb-a02e-1ae1253dabcc.filesusr.com/ugd/059ff1_0e395c399d0b4737939013a7cbc0f2e2.pdf?index=trueIn PDF document text
    • http://vinegufoxa.rf.gd/fuvexi.pdfIn PDF document text
    • http://magajavopisili.epizy.com/preterite_tense_spanish_worksheet_answers.pdfIn PDF document text
    • http://sejozewixexoba.rf.gd/miwoxawa.pdfIn PDF document text
    • https://391e4f24-9fc9-4707-ac06-338edcd9f959.filesusr.com/ugd/110ef3_b3835946da2a4d08b91504766761f23b.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE8 5316 bytes
SHA-256: ea54411643441fbf8b6b4ce8fdf652b690dd87d158b375a8315fdd7931d5722f
font_01_sfnt_off0000eee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE1 10108 bytes
SHA-256: ee94665ee85dd84388224e591cf1670893a7dd2168df8d070a7400a648e9d936

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