Malicious PDF — malware analysis report

Static analysis result for SHA-256 027ada446a468498…

MALICIOUS

PDF

76.1 KB Created: 2021-05-13 02:01:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d54e6511269ccfe5eef859e4a5d6af31 SHA-1: ae6f905720c6d8f10ce70d66925f174e28563d35 SHA-256: 027ada446a4684981d47b45885be44d7cfda744c9c7192b51e934bbb7cb3e777
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. It contains numerous embedded URLs, with several pointing to disposable hosting domains, suggesting a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains keywords related to product reviews, likely serving as a lure.

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://seumenha.ru/strik?utm_term=numark+ttusb+turntable+review PDF link annotation
    • http://vijepuwobewi.mygamesonline.org/97873272824.pdfIn PDF document text
    • https://cdn.sqhk.co/mebinolopuf/igh4ihd/39468093429.pdfIn PDF document text
    • http://vegifeda.mypressonline.com/51923669011.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/Rhayiw2/homemade_facial_masks_for_pore_minimizing.pdfIn PDF document text
    • http://musuwefamomare.22web.org/architect_studio_companion.pdfIn PDF document text
    • http://retoxen.mypressonline.com/referencia_bibliogrfica_apa.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/4ifW9gj/wepetavubuxeku.pdfIn PDF document text
    • http://lubegow.iblogger.org/72373393174.pdfIn PDF document text
    • http://ramuwesitavoz.mywebcommunity.org/difference_between_monocot_and_dicot_seeds.pdfIn PDF document text
    • http://nesorus.mywebcommunity.org/printable_centimeter_ruler.pdfIn PDF document text
    • http://sowopezamiw.medianewsonline.com/reduce_illustrator_size.pdfIn PDF document text
    • http://zuzorovix.scienceontheweb.net/74722282251.pdfIn PDF document text
    • https://cdn.sqhk.co/ridijafugemi/WYhh60T/loxuj.pdfIn PDF document text
    • https://cdn.sqhk.co/temirikuji/f9jj2rj/roaring_racing_download.pdfIn PDF document text
    • http://fagogit.sportsontheweb.net/2006_john_deere_320_skid_steer_reviews.pdfIn PDF document text
    • http://lijonotogi.scienceontheweb.net/41638582865.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gumomexad.onlinewebshop.net/vekejaro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01650593-f0e3-4d9d-886e-f2bd0b11e353/home_theatre_samsung_ht-j4500k_zs.pdfIn PDF document text
    • http://pulitisagot.atwebpages.com/10063492428.pdfIn PDF document text
    • http://dukizovisepo.rf.gd/26745645201.pdfIn PDF document text
    • http://gavawekib.myartsonline.com/benefits_of_internet_marketing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebc5de63-ed3b-477a-88d0-913e6159b8b1/faforupi.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_off0000e852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE852 5156 bytes
SHA-256: 325cb67677b68aa5c8684125cd550c9c4e8863242370862026e5c0685c3976e0
font_01_sfnt_off0000f9d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D4 11684 bytes
SHA-256: 52935eaf697140708a07baeedd085cae1e38bc86fdb7b9d424599ba359fd26cf

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