Malicious PDF — malware analysis report

Static analysis result for SHA-256 93986b6f639c5b1a…

MALICIOUS

PDF

69.6 KB Created: 2021-04-09 12:07:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 5c4eecc72db2fb40c1a12e3bb281b5be SHA-1: ce2a36a60ebabaa7ed8ee7f3f337c93aa6439c46 SHA-256: 93986b6f639c5b1aab89dfe6ffa7e1b2ccdf28a1a5437495a4e9413cc305d2da
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The document body, though heavily obfuscated, contains text suggesting it is a lure related to 'tajweed quran with english translation amazon', directing users to a suspicious URL. The presence of numerous external URIs and link farm characteristics further support a malicious intent, likely to redirect users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://botokaw.ru/strik?utm_term=tajweed+quran+with+english+translation+amazon PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4415061/normal_5fec307058bd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527357/normal_5fd1f55b4eb7a.pdfIn PDF document text
    • https://cdn.sqhk.co/sisamide/icErcjd/miwelidolugokaxarav.pdfIn PDF document text
    • https://cdn.sqhk.co/fiseguvugele/jSichgh/chicago_police_officer_shot_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/T2Wupje/milesosavulok.pdfIn PDF document text
    • http://surevixa.22web.org/bajevitibatibemimum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413225/normal_5fd2ae12b8782.pdfIn PDF document text
    • https://cdn.sqhk.co/nazujovo/jgGaOit/pugimitemewotazozu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473640/normal_5ffaefd279c40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409114/normal_5fd643b248088.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gozifep/2005_kawasaki_bayou_250_carburetor_rebuild_kit.pdfIn PDF document text
    • http://dabemekos.epizy.com/67465546065.pdfIn PDF document text
    • https://044ec7df-721b-4788-b209-87474a3fcb06.filesusr.com/ugd/60ffa2_9c4c399314514fd393d9316a62496dba.pdf?index=trueIn PDF document text
    • http://zazupixuwup.rf.gd/dec_complaints_handling_policy_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/tixigevira.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/58725797765.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0333e701-e9cc-4382-9e5e-ec9ebd0f7d89/momelazujalodarawawoluku.pdfIn PDF document text
    • https://f38be386-5799-403b-9303-fb121113655a.filesusr.com/ugd/6f1aa7_5ddaf96e67674e56b97dc281666c3a58.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/de53c307-b5d6-48ae-a804-34426e30c225/subtraction_without_regrouping_worksheets_free.pdfIn PDF document text
    • http://sakuduma.rf.gd/pipamovobibitil.pdfIn PDF document text
    • https://201a0bc5-0eb3-4135-8969-828875a6b07d.filesusr.com/ugd/607883_b50f545c55884c2496038c0b632aca40.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/97875c76-8c82-45df-a609-0bdcad19bd83/zesagugejofetilududejegik.pdfIn PDF document text
    • https://d5fd0048-bb8d-45a1-ba21-28d1cb0b7162.filesusr.com/ugd/5e8de6_5ff1ba3a21ff492ebe8f1735cca4a96d.pdf?index=trueIn PDF document text
    • http://lunaxugezejotu.epizy.com/civ_vi_steam_guides.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d01d040c-1db4-484b-8f66-0050a1b20dc5/77133707401.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/daisy_powerline_15xt_parts.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC768 5412 bytes
SHA-256: 03f6455e72ea2891932d54e46edf16baaa5e9ea4eb1e5507f2095604d5d1af7d
font_01_sfnt_off0000d9b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B3 9564 bytes
SHA-256: b71756430ab82259864a2818c6d9c685238e317d72af336fd1f15f86bba686ae
font_02_sfnt_off0000fa42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA42 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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