Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d46e26ffeef7033…

MALICIOUS

PDF

97.1 KB Created: 2021-04-17 17:23:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e75721a1e64f19e56e367b8a1d21eb25 SHA-1: b66093b87f25952ef89f361059e725df0913e868 SHA-256: 0d46e26ffeef7033e4f27290f64b6192625fe73c3b630dde2f840350335eaa9b
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external URIs are indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://seumenha.ru/strik?utm_term=antonyms+and+synonyms+list+with+meaning+in+hindi+pdf+download PDF link annotation
    • https://lifitexuga.weebly.com/uploads/1/3/4/3/134356919/92e6b9f6c938567.pdfIn PDF document text
    • http://setofexperience.site/download_the_farm_sassy_princess_mod_apkkxxdv.pdfIn PDF document text
    • https://fagutefoxod.weebly.com/uploads/1/3/4/2/134235025/kafezeboziled.pdfIn PDF document text
    • https://zobatovegu.weebly.com/uploads/1/3/0/8/130873738/4099339.pdfIn PDF document text
    • http://idealslimitaly.site/retro_city_rampage_dx_cheat_codes_androidhj6mn.pdfIn PDF document text
    • http://antinomi.design/lagu_ghuroba_versi_alfina_nindiyani24nwa.pdfIn PDF document text
    • https://gojudewusidaza.weebly.com/uploads/1/3/4/8/134888042/pupogopitaf.pdfIn PDF document text
    • https://fetavagipiw.weebly.com/uploads/1/3/1/3/131380759/5265682.pdfIn PDF document text
    • http://cyberlife.store/vojotuzorofeliljg992.pdfIn PDF document text
    • https://kugakisan.weebly.com/uploads/1/3/4/3/134390280/pelalazijaranomo.pdfIn PDF document text
    • http://appletopshop.ru/90575461185nxrz6.pdfIn PDF document text
    • http://choosenews.space/nopufepofosotenizumeropedjogql.pdfIn PDF document text
    • http://2020coupons.info/juxamijiwotipi7mzct.pdfIn PDF document text
    • https://senorori.weebly.com/uploads/1/3/4/6/134641151/tunalefaw-fuboxitaw-venedugebegimi-bebizaf.pdfIn PDF document text
    • http://lovechat24.club/do_i_need_to_take_a_vision_test_to_renew_your_licenseiog1z.pdfIn PDF document text
    • http://meetporte.xyz/weladuzamazevinok4bndt.pdfIn PDF document text
    • https://gekojufoj.weebly.com/uploads/1/3/4/4/134438070/7fc9bbd85a8.pdfIn PDF document text
    • https://jelisewisu.weebly.com/uploads/1/3/1/4/131410299/2031865.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e51f90f-70e5-48d9-acf4-be0e6caa0204/95110173717.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/how_many_carbs_in_a_whopper_with_cheese_no_bun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c65027f6-ce80-40ad-b024-14bd58e93af5/the_stand_stephen_king_series_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3669703f-76cb-4c93-9249-09944bccd8d1/punuwomafusuxabogakipuxof.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/best_gmat_verbal_prep_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cecd83d-a05a-47c2-a4b7-eb58da7b55d9/50651424238.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/3929592943.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/what_is_the_best_treatment_for_metatarsalgia.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_off00012958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12958 5540 bytes
SHA-256: b5b2942ca7e84cb34cd8d909ddf9f9a75fab9c9fe540665d9f56b37f0ac99a15
font_01_sfnt_off00013c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C2A 10664 bytes
SHA-256: 87b8c2328c12801bb3d95b456aa14de9ecf70579e81bf5f830f710d859636ef9
font_02_sfnt_off00016065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16065 16172 bytes
SHA-256: b6a6ca5d1ececf9b8f85cf34f243a5152d852bd6c46ff1fd844468d100e5349c