Malicious PDF — malware analysis report

Static analysis result for SHA-256 7302b5e1b3a0a059…

MALICIOUS

PDF

75.1 KB Created: 2021-03-21 20:41:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 64bc4a7180db329f4baf84fd4dc001d2 SHA-1: d9b197a37ce49ba2d20598a8d5e779b34422191d SHA-256: 7302b5e1b3a0a059890ecc0955c42f1feb5211f4260aef5313615961bc339f57
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to disposable hosting or known malicious redirectors, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier further support its malicious nature. The document body appears to be obfuscated or corrupted, preventing a deeper analysis of its specific content beyond the title.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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.
  • 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://crophysi.ru/award?keyword=botulismo+em+equinos+pdf In PDF document text
    • https://norofuzalugegok.weebly.com/uploads/1/3/4/8/134882219/bf130742.pdfIn PDF document text
    • https://cdn.sqhk.co/dagozuwemep/6jjuhdq/waxijaxe.pdfIn PDF document text
    • https://sotamepepoj.weebly.com/uploads/1/3/0/8/130874386/dirubul_kepazufadifozu_zalazukelozuruv.pdfIn PDF document text
    • http://nupigit.22web.org/24817792890.pdfIn PDF document text
    • https://kenibojowosude.weebly.com/uploads/1/3/5/3/135324683/xesibofabuka.pdfIn PDF document text
    • https://cdn.sqhk.co/venujotiwufo/helhaQd/business_administration_accounting_salary_in_canada.pdfIn PDF document text
    • http://jofadebujidut.22web.org/memrias_pstumas_de_brs_cubas_em_quadrinhos.pdfIn PDF document text
    • http://pifedalune.medianewsonline.com/the_lottery_movie_1996_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/bomoxale/chjSjoP/43581196118.pdfIn PDF document text
    • https://purelukanixavaj.weebly.com/uploads/1/3/1/4/131454065/zemoni-bilexibesogaka.pdfIn PDF document text
    • https://sowematawenuw.weebly.com/uploads/1/3/1/1/131164153/xevudafuriril-xawimu-gitedudafegeg-jatodizalutal.pdfIn PDF document text
    • https://xefigokilevugez.weebly.com/uploads/1/3/5/2/135299251/wovopajozajutoz.pdfIn PDF document text
    • http://suzaxikuzexaw.66ghz.com/akshara_bidaai_song.pdfIn PDF document text
    • http://lizowaw.scienceontheweb.net/zabareloxidibotagajozus.pdfIn PDF document text
    • http://zodezabazigojab.iblogger.org/aptitude_test_sample_papers.pdfIn PDF document text
    • https://fefodenajefive.weebly.com/uploads/1/3/1/4/131437461/lojetixixeruludi.pdfIn PDF document text
    • http://gutagige.sportsontheweb.net/regalame_una_foto_translate_to_english.pdfIn PDF document text
    • http://puzososiv.22web.org/aadhaar_update_form_online.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzifixe/gcTTfjc/mujozup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gumomexad.onlinewebshop.net/making_a_toga_with_a_fitted_sheet.pdfIn PDF document text
    • http://fiforeru.atwebpages.com/96951575151.pdfIn PDF document text
    • http://zalaxorenisev.epizy.com/information_technology_report_comments.pdfIn PDF document text
    • http://wijevisufa.rf.gd/xomesizixew.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_off0000e5de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DE 5056 bytes
SHA-256: c76bf61dcb2fa352ec698b47e18749863904a98e2d94d3bb662f29b08c18079d
font_01_sfnt_off0000f705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF705 12816 bytes
SHA-256: 70e88f20b4512904d03d3759a30800b0cc6216bfa3c7ce67139997731f586e00