Malicious PDF — malware analysis report

Static analysis result for SHA-256 12958b0f05464705…

MALICIOUS

PDF

90.8 KB Created: 2021-03-10 09:24:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 529dc560d1ab136e68bf8209c215008c SHA-1: c404b2dac4e9eaf84871c19a5088f1f384005896 SHA-256: 12958b0f054647055a08c5f248a7b5a342d00c347fe5cb939c18ef569ab6e722
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting an attempt to distribute or redirect users to other malicious content. The ClamAV detection and ML classifier also indicate malicious intent, specifically flagging it as a phishing trojan. While no scripts were directly extracted, the presence of embedded URLs and the nature of the heuristics point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://vilenefex.ru/wix?keyword=sacred+woman+free+pdf+download PDF link annotation
    • https://sivaxawisebirim.weebly.com/uploads/1/3/1/4/131407763/bukamewebe.pdfIn PDF document text
    • http://bio-ita.fun/powershot_pro_stapler_parts14z7n.pdfIn PDF document text
    • https://novunafa.weebly.com/uploads/1/3/1/3/131379228/guvuj-bepufuvas-desuk-dijeveg.pdfIn PDF document text
    • http://wivuperafuzo.mypressonline.com/modejomotobirojosujaxakaj.pdfIn PDF document text
    • https://morapunepa.weebly.com/uploads/1/3/1/6/131606469/5048112.pdfIn PDF document text
    • http://zokugorevat.mywebcommunity.org/xfinity_xr2_remote_not_working.pdfIn PDF document text
    • http://bupitubegedew.getenjoyment.net/bakteri_enterobacter_aerogenes.pdfIn PDF document text
    • http://gprofights.ru/easy_popular_guitar_tabs_acousticx3dm1.pdfIn PDF document text
    • http://babysampler.com/lugabovinezibefro5qq.pdfIn PDF document text
    • https://ziruxirunilexa.weebly.com/uploads/1/3/0/7/130775543/9153505.pdfIn PDF document text
    • http://hotel-engels.ru/second_language_acquisition_theories_overview_and_evaluation6v7mi.pdfIn PDF document text
    • http://roxedizusugu.mywebcommunity.org/96059407419.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/ratupapi_gomulodur_nixefogiviseno.pdfIn PDF document text
    • http://pushbiz.fun/pexulegozifijud6ydk8.pdfIn PDF document text
    • http://jebebixazonutug.mypressonline.com/75617057302.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/winaduselilejadadu.pdfIn PDF document text
    • http://xogijowag.onlinewebshop.net/mfj_945e_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/rijuvilopetanozovu.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/46486536283.pdfIn PDF document text
    • http://lojubefogugiku.onlinewebshop.net/peguzefasar.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/acer_aspire_a315-_31_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/27813783165.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/weather_report_for_north_haledon_nj.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/free_printable_all_about_me_worksheet_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/lagu_change_up_seventeen.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/auto_rap_maker_apk.pdfIn PDF document text
    • http://nopawalaxuwaw.onlinewebshop.net/excell_pressure_washer_parts_list.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_off000126c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126C9 5316 bytes
SHA-256: bbccda567d0ead2c2a91c41c2e00195dd071957f3a62453872c6aa4e799be64d
font_01_sfnt_off000138df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138DF 10720 bytes
SHA-256: eb2f1bdf266ce2fc578e67b0013371a2abb38aebcad0efd3ea8d36c132573523

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