Malicious PDF — malware analysis report

Static analysis result for SHA-256 14769535e0bebef3…

MALICIOUS

PDF

82.3 KB Created: 2021-04-05 11:18:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 5c39d2f7eb3eeb03b829155c65d80d17 SHA-1: 23630a2772d16ee78fa5b7b09b67b9b8848ee784 SHA-256: 14769535e0bebef3637ef3654acbb4ad89046e0ef21efec1199205dc916553c5
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a prominent one disguised as a search result for a biblical phrase. This heuristic, combined with ML and ClamAV detections, strongly suggests a phishing or malware distribution attempt. The PDF's structure and embedded links indicate it's designed to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://gimoguvi.ru/strik?utm_term=what+does+new+wine+mean+in+the+bible PDF link annotation
    • http://xufededubumavif.scienceontheweb.net/adobe_sketch_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384471/normal_5fe443c52a608.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420430/normal_60012adc80319.pdfIn PDF document text
    • http://wulurag.mygamesonline.org/3d_printing_and_additive_manufacturing_principles_and_applications.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473618/normal_6037cca2a629c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465149/normal_606602d214aba.pdfIn PDF document text
    • http://jadogaxarabu.mygamesonline.org/what_are_the_questions_asked_in_desktop_support_interview.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455883/normal_5fec22e4215f3.pdfIn PDF document text
    • http://zitokujamu.mypressonline.com/46022261727.pdfIn PDF document text
    • http://pukebebizadolu.mypressonline.com/srimad_bhagavatam_in_malayalam.pdfIn PDF document text
    • http://muzomabavima.medianewsonline.com/peter_m_senge_the_fifth_discipline.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/9f883d84-e929-4544-abfd-55b00030c860/speed_queen_washer_not_cleaning_clothes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e1d21d6-c824-40b4-b208-fac7d2ae248d/34446252351.pdfIn PDF document text
    • http://lexaxixamu.rf.gd/pandoc_markdown_to_latex_template.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/mixez.pdfIn PDF document text
    • http://lolugedupagimu.epizy.com/60745726033.pdfIn PDF document text
    • http://nepafex.epizy.com/pattern_recognition_and_machine_learning_bishop.pdfIn PDF document text
    • http://kalotiwinilobiw.epizy.com/74800179457.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12f974c8-8902-4e23-9c7e-9cf56740abab/how_to_begin_a_refutation_paragraph.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/muzex.pdfIn PDF document text
    • http://fatavetotujel.onlinewebshop.net/vocabulary_words_with_tamil_meaning_and_sentence_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f72e25c4-6f77-492c-b6d0-96ac99ad7852/norcold_6162_rv_refrigerator_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a8f828d-2fb8-4f43-b25a-3026f746c84d/dragon_bookends_nz.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/40662888860.pdfIn PDF document text
    • http://boragilaz.rf.gd/xisuv.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/45090301583.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/microsoft_powerpoint_word_search_answer_key.pdfIn PDF document text
    • http://gizixaxeviduf.myartsonline.com/70237758634.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_off00010487.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10487 5216 bytes
SHA-256: 642574e5acafa507ec86805be5646d682543fe09640ae7832f431c5785dc8800
font_01_sfnt_off00011634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11634 10804 bytes
SHA-256: 17a20b79a423db9447b12645602388bc56314a360483c886b7f6baf22847fa93