Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cc1ae4a5ff50ca8…

MALICIOUS

PDF

77.2 KB Created: 2021-03-31 04:52:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: b1ae492bb2cfff8c877eb468f9074243 SHA-1: 3a5c19ff1fd7f0b8c6273d81f7f150ac4472beaa SHA-256: 8cc1ae4a5ff50ca8cc33eaddfd98e5cfa377aaef704941b849a9691be379040a
184 Risk Score

Malware Insights

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

The sample is a PDF file flagged by multiple heuristics as malicious, including a critical alert for linking to known malicious redirector infrastructure. The embedded links and the PDF structure indicate an attempt to direct users to potentially harmful websites, consistent with phishing or malware distribution campaigns. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript, and the heuristics suggest active malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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 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/wix?keyword=johnny+crawford+songs In PDF document text
    • http://miraluvofizobe.medianewsonline.com/ielts_speaking_part_2_3.pdfIn PDF document text
    • http://xufuxenu.mypressonline.com/vaturikad.pdfIn PDF document text
    • http://moekolechko.icu/turbo_debit_card_1800_numberq2q36.pdfIn PDF document text
    • http://canlisohbetim.net/hill_rom_versacare_bed_partsgaofl.pdfIn PDF document text
    • http://astrology-personal.online/tevizima4sywb.pdfIn PDF document text
    • http://godotobekof.scienceontheweb.net/bpsc_pt_syllabus_2020.pdfIn PDF document text
    • http://luminar3-download.xyz/sql_database_basic_tutorial4ov38.pdfIn PDF document text
    • http://vykupavto54.ru/56144891128jcml0.pdfIn PDF document text
    • http://omoikiri.info/pajama_friends_ep_2_eng_subbiu3u.pdfIn PDF document text
    • http://pankreatitum.ru/patiminagegibagiwakixelw6q.pdfIn PDF document text
    • http://sreview.online/firobowoxejodajunipezar1yf4.pdfIn PDF document text
    • http://iglivesupportteam.com/2004_vw_beetle_transmission_fluid_typeo52f6.pdfIn PDF document text
    • http://mukuwasoveta.sportsontheweb.net/rirubujarupemisirasar.pdfIn PDF document text
    • http://kalukoroduro.mygamesonline.org/morphology_of_ebola_virus.pdfIn PDF document text
    • http://warupipujamoru.sportsontheweb.net/34257516483.pdfIn PDF document text
    • http://buyervannakupitvsem.xyz/travels_of_ibn_battuta_mapncejc.pdfIn PDF document text
    • http://kejoxemubogese.mywebcommunity.org/young_living_compensation_plan_fast_start_bonus.pdfIn PDF document text
    • http://tuduvodakep.mypressonline.com/53282833028.pdfIn PDF document text
    • http://mynasert.online/calculus_for_the_life_sciences_modelling_the_dynamics_of_life_solutionsx1qqn.pdfIn PDF document text
    • http://gekifek.scienceontheweb.net/waste_king_legend_111_reset_button.pdfIn PDF document text
    • http://fezelegafefuv.mywebcommunity.org/83747062472.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rikuworubit.myartsonline.com/25449371456.pdfIn PDF document text
    • http://xakagigoneliv.myartsonline.com/somapedowagasibuvufa.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_off0000ef10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF10 5436 bytes
SHA-256: f9f96f6da51d6a15a216bc33d12ff5d68f8aa487f8c7770b416ae1ab0393cbaf
font_01_sfnt_off000101a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A4 11248 bytes
SHA-256: d21264ff1358814310da677a1e2bf97c5d617f9c194a9abf0766d365a9e7ceef

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