Malicious PDF — malware analysis report

Static analysis result for SHA-256 e462b6d19731d791…

MALICIOUS

PDF

76.8 KB Created: 2021-03-14 02:43:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 587f1747d2278a28d14a5c02b964024e SHA-1: 7d297163aef7e294f3506658b759ca163f0dc74b SHA-256: e462b6d19731d79163bd9d65abd641a70fc2e8bd73b394a0451d32142301178d
126 Risk Score

Malware Insights

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

The file is a PDF document that contains numerous external URIs, many of which point to disposable hosting services and appear to be part of a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, suggests a lure related to 'Bible study on prayer and fasting pdf'. The primary attack vector appears to be directing the user to malicious URLs, likely for phishing or to download further malicious content.

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://baarspo.ru/award?keyword=bible+study+on+prayer+and+fasting+pdf PDF link annotation
    • http://vijexibat.mywebcommunity.org/what_can_the_arrow_in_a_chemical_reaction_be_translated_to_mean.pdfIn PDF document text
    • https://vijibasotaxeja.weebly.com/uploads/1/3/5/9/135990507/e6a51acb8f1760.pdfIn PDF document text
    • https://dirifulezidume.weebly.com/uploads/1/3/2/7/132740871/madumoxi_xonomunalit.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/e6INjgv/dozadigerowinipexebav.pdfIn PDF document text
    • https://lepefolavexar.weebly.com/uploads/1/3/0/8/130874674/95e6c2110.pdfIn PDF document text
    • https://cdn.sqhk.co/zakoduba/higgdjb/the_king_of_fighters_97_download.pdfIn PDF document text
    • http://ragofilud.medianewsonline.com/6598878951.pdfIn PDF document text
    • https://sunozidugeb.weebly.com/uploads/1/3/4/4/134486191/5548895.pdfIn PDF document text
    • https://cdn.sqhk.co/lirotigi/jrjejii/81139501833.pdfIn PDF document text
    • https://wunaramalus.weebly.com/uploads/1/3/4/5/134576193/davodetijajo.pdfIn PDF document text
    • https://xidibifolun.weebly.com/uploads/1/3/2/7/132710634/lolisadon_juwejikosijuvi.pdfIn PDF document text
    • https://mosodufenu.weebly.com/uploads/1/3/4/8/134889918/tebilis.pdfIn PDF document text
    • http://kugenezajiz.22web.org/core_java_tutorial_for_beginners.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/sansa_clip_wont_charge.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/92365ee8-391b-473f-bc58-258f66e64a4f/airport_express_base_station_a1084.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/433311bf-93e3-40c0-a3fb-30f541575abc/aquasource_faucet_valve_replacement.pdfIn PDF document text
    • http://kenesowozowojaw.myartsonline.com/deductive_and_inductive_reasoning_in_math.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8f122fb-dc30-42a8-85bc-08f2b6fd4ee9/can_you_only_buy_houses_on_your_turn_monopoly.pdfIn PDF document text
    • http://palowok.epizy.com/difference_between_data_mart_and_data_warehouse_ppt.pdfIn PDF document text
    • http://xulodolab.epizy.com/47292262199.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbe501a2-3d27-40cc-8153-5b9921270015/ejemplos_de_los_tipos_de_investigacion_cientifica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdaf26e0-3cd0-4cb2-a2da-210e93d45f44/ohms_law_worksheet_answers_13.3.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_off0000ede6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE6 5500 bytes
SHA-256: d5d701c33bfc198db99fe7b81d5911b9b696b8be9a411a512a9cd563b5453a7c
font_01_sfnt_off000100b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100B1 10416 bytes
SHA-256: 463d27f13db7bdd1edf6949a804df42010a5d11f5ee834efe6c35c79c9a151c7