Malicious PDF — malware analysis report

Static analysis result for SHA-256 587c7b4c000c4818…

MALICIOUS

PDF

84.5 KB Created: 2021-03-31 06:12:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 118cd3bf889bbf04e56bc9737b5cd0c8 SHA-1: f46c8bf1cec421d53ec3afcb9b17763480c1dbcf SHA-256: 587c7b4c000c48188e25de9c1c255aa82817b5381bf8eaab696b781f2f982de0
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, with a high concentration on disposable hosting, indicating a link farm designed to obscure malicious destinations. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. Although no scripts were extracted, the PDF structure and URL patterns are indicative of a malicious document, potentially leveraging embedded JavaScript for redirection or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=all+write+round+robin+kagan PDF link annotation
    • http://womumonafip.22web.org/tatimegan.pdfIn PDF document text
    • http://lixodamevurobar.mygamesonline.org/gomovo.pdfIn PDF document text
    • http://tvoyoproc.fun/7698319504sj1ny.pdfIn PDF document text
    • http://waparudadip.mywebcommunity.org/gifojewulu.pdfIn PDF document text
    • http://esclick.pro/how_to_make_crosley_record_player_worky882x.pdfIn PDF document text
    • https://cdn.sqhk.co/mugegiduveb/gjln3XW/77680521755.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502567/normal_6054ee86b619e.pdfIn PDF document text
    • http://lightly.store/58833182266qu3k8.pdfIn PDF document text
    • http://lowazaz.22web.org/abaddon_dotabuff_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikagisato/uhabieo/analogies_reasoning_questions.pdfIn PDF document text
    • http://nout-prokat.website/asrock_n68-s3_ucc____wbqh3w.pdfIn PDF document text
    • https://cdn.sqhk.co/fedelubu/RhfhaV3/30335548655.pdfIn PDF document text
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467004/normal_5fe50ab95eba6.pdfIn PDF document text
    • https://cdn.sqhk.co/jukunobegabe/A5hfjcg/98518002397.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/tajimipojimo/kewunofusenetibogokozanad.pdfIn PDF document text
    • http://gedorigakijalag.epizy.com/buddhadasa_bhikkhu.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/97692729271.pdfIn PDF document text
    • http://sazizonega.rf.gd/37169079155.pdfIn PDF document text
    • http://zininorenedalo.onlinewebshop.net/free_printable_blank_bingo_cards.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/77769836543.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/android_button_set_background_color_and_image.pdfIn PDF document text
    • http://nimezidudixo.epizy.com/90974866828.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/picsart_free_for_windows_7_filehippo.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_off0000fbb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBB4 4980 bytes
SHA-256: cc9915783c5d8804d7cbe46b182960e0a0c79ecfd464a632145ecd9919352ca1
font_01_sfnt_off00010cbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CBF 12192 bytes
SHA-256: e96e67ffbfd1b96ae0ee5a7ee18341c8acae39d664b7db5b7b739d9c23058b8b
font_02_sfnt_off000134b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134B3 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.