Malicious PDF — malware analysis report

Static analysis result for SHA-256 f69b61b4187ec6fa…

MALICIOUS

PDF

86.7 KB Created: 2021-05-02 01:36:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e20790e83dfdf0e96397a818e3d1ec08 SHA-1: 07fc2d8b418d112f99eb38c3e3f3da62592b3b5e SHA-256: f69b61b4187ec6fa303e5fc07245e4c3a06166877dfb9953c9544e2f4f297d4a
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with several pointing to disposable hosting and exhibiting link farm characteristics, strongly suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection further corroborate its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://gimoguvi.ru/strik?utm_term=new+moon+jan+2021+meaning PDF link annotation
    • http://tadidavazutopa.sportsontheweb.net/cervical_spinal_stenosis_exercises.pdfIn PDF document text
    • http://segekofolopumav.iblogger.org/how_to_write_a_date_range_ap_style.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418574/normal_601bde88b45b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484993/normal_60618e807177d.pdfIn PDF document text
    • http://italiahot.space/hosanna_marcos_barrientos_bpm80khs.pdfIn PDF document text
    • http://tezibif.mygamesonline.org/biomaterials_science_and_engineering.pdfIn PDF document text
    • http://sibiwuketilivi.22web.org/bible_book_of_james.pdfIn PDF document text
    • http://kekewawoxugar.sportsontheweb.net/accounting_and_finance_for_non_specialists_11th_edition.pdfIn PDF document text
    • http://mbfsopg.com/jumping_the_broom_movie_plotmd2k6.pdfIn PDF document text
    • http://mebel-albero.ru/15622425113ep3u0.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/db_legends_mod_apk_hokage242jp1ws.pdfIn PDF document text
    • http://ecosbor.net/sindrome_de_ulises_libro7gk3t.pdfIn PDF document text
    • http://sirofopunisatus.iblogger.org/jokoperegewunirenaruloz.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/voxazedisula/leather_holster_for_ruger_lc9_with_crimson_trace_laser.pdfIn PDF document text
    • http://gegavolaful.epizy.com/gy-_31_color_sensor_arduino_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/zimetezadenufeporitefa.pdfIn PDF document text
    • http://sapuxomaz.epizy.com/xobidilezubenagogewat.pdfIn PDF document text
    • http://tiwatimab.atwebpages.com/53063949737.pdfIn PDF document text
    • http://gexipodadika.rf.gd/nuboxodadoxaxuxodopag.pdfIn PDF document text
    • http://japubonaxepesi.rf.gd/pupuji.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/5534771717.pdfIn PDF document text
    • http://ruzofugeru.myartsonline.com/56319793742.pdfIn PDF document text
    • http://lajixowamimexo.epizy.com/veduzevi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD5 5164 bytes
SHA-256: 889be05b9da4d9f5a2e758f081719847dc16c63b2f60b3544e641ebd13cb784f
font_01_sfnt_off00010e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E72 10960 bytes
SHA-256: ff2fdb8d66f60d5c059813189f95274fce4d9545ffa05ded0404768a744550e1
font_02_sfnt_off000133fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133FD 17156 bytes
SHA-256: 2f1f2cecfd37a6cea80b08c0b981d7978ea97a4b693509dfe7d669e10365981b

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