Malicious PDF — malware analysis report

Static analysis result for SHA-256 b72d2318bd45afee…

MALICIOUS

PDF

110.5 KB Created: 2021-03-05 00:59:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 097e8bfe27eb7341ea48b3e660556aae SHA-1: 24fbcfe3269e97415780df0eedbfde5da722ee0e SHA-256: b72d2318bd45afee70ccc21f71c085e784e6816c31220a7f3437aaf7004e05da
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. The presence of numerous external links suggests an attempt to redirect users to malicious sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://bologen.ru/strik?utm_term=big+green+egg+xl+acacia+table+dimensions PDF link annotation
    • http://pycnidwzxc.info/vr_escape_game_2_level_6zjdp5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455681/normal_5ff26c1c4c611.pdfIn PDF document text
    • https://kiziwovoxapi.weebly.com/uploads/1/3/4/6/134617524/2470112.pdfIn PDF document text
    • https://jaluburevajag.weebly.com/uploads/1/3/0/8/130874017/lemona.pdfIn PDF document text
    • http://insta-sale.site/42409094112y82xq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384480/normal_600b375983ea9.pdfIn PDF document text
    • http://alcexpress3.xyz/activex_component_cant_create_object_sap_gui21pje.pdfIn PDF document text
    • http://eushopvmn.site/diploma_cet_2018_key_answersz41d1.pdfIn PDF document text
    • http://trendmobile.ru/angry_birds_transformers_qr_codes_cheaty84ok.pdfIn PDF document text
    • http://myyshooop227.site/html_css_and_javascriptssi7s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485448/normal_600824f69b20b.pdfIn PDF document text
    • https://najunewuzerus.weebly.com/uploads/1/3/1/4/131408250/1252127.pdfIn PDF document text
    • http://prizinsta24.space/the_game_of_life_funny_versiony1jwr.pdfIn PDF document text
    • https://kotedeturu.weebly.com/uploads/1/3/1/6/131606402/xevanexegog_bulagalo_xapegozusuxi.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/gumegulaxi/technical_analysis_explained_by_martin_pring_drive.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/indian_and_world_geography_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/axl_tamil_hd_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/kata_bokken_aikido.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/ligagaziwobexefesosudutuv.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/besuvadep.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/favimopavexajired.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/arere_ekkada_ekkada_female_video_song.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_off00016f11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F11 5516 bytes
SHA-256: d1e106ffa6e8a8aa7f5175e9c228088576d6481e00739b156796de9d0522aa28
font_01_sfnt_off000181bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x181BF 12628 bytes
SHA-256: 4d040892f6b947fc2f5ec3dc352f6543942b6e778c150a84aad59ee54a1885ba

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