Malicious PDF — malware analysis report

Static analysis result for SHA-256 d65035096b882ed9…

MALICIOUS

PDF

94.0 KB Created: 2021-04-24 10:20:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 4cf169b54135de748e5352350075e754 SHA-1: 2cd1192916e114c5c7d44d6b7d2fc0540726619e SHA-256: d65035096b882ed9f665776bb321bb7360b429b8608768bf1071fdb3a47ac638
186 Risk Score

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 high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam operation. The embedded content, while appearing to be a search result, is likely a lure to direct users to malicious or spam-related websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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 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.
  • 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://golowaki.ru/strik?utm_term=what+does+conversational+mean+in+music PDF link annotation
    • http://topcabinets.xyz/fibutokoxuwovomopa8mmky.pdfIn PDF document text
    • https://bosudire.weebly.com/uploads/1/3/4/4/134456289/tonik_megumelubepexax_zobineteseto_sotumexoden.pdfIn PDF document text
    • http://jekeluxuto.mywebcommunity.org/rodafapafu.pdfIn PDF document text
    • https://dapavivilo.weebly.com/uploads/1/3/4/8/134895477/sojagasafavi-sejogowinaleki-xogujaxixesisom.pdfIn PDF document text
    • https://foxakiletomuxo.weebly.com/uploads/1/3/4/0/134012751/1742079.pdfIn PDF document text
    • http://tehnotop.store/alm_x_celica5d9p3.pdfIn PDF document text
    • http://mebelintera.ru/lilith_s_throne_save_editortgv0g.pdfIn PDF document text
    • https://baliwiwun.weebly.com/uploads/1/3/1/3/131380001/puvisefaponota.pdfIn PDF document text
    • https://nujamoxe.weebly.com/uploads/1/3/4/2/134234607/virupi-genipemi-rigofivoval-pevafuxugawedob.pdfIn PDF document text
    • https://pofisuxix.weebly.com/uploads/1/3/4/0/134016862/6dbcb2d1aa1.pdfIn PDF document text
    • http://liwurivosopap.medianewsonline.com/24400162309.pdfIn PDF document text
    • http://youla-24.cc/guvakalawexirutafuvutwc4mf.pdfIn PDF document text
    • https://zududebagulakes.weebly.com/uploads/1/3/3/9/133997448/sonuwi.pdfIn PDF document text
    • https://wewiruvikaju.weebly.com/uploads/1/3/0/7/130775929/3d53f8afdc.pdfIn PDF document text
    • https://zoxaminajoge.weebly.com/uploads/1/3/1/6/131637873/7756063.pdfIn PDF document text
    • http://sidazolomaw.22web.org/gloomhaven_solo_items.pdfIn PDF document text
    • http://femonejigajape.mywebcommunity.org/free_printable_calendar_may_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sulawozunu.rf.gd/abramelin_new_translation.pdfIn PDF document text
    • https://91ca87c2-c493-4616-adaa-fbcec45394e1.filesusr.com/ugd/6116da_bbc374dd87de4da180dcc325ed230306.pdf?index=trueIn PDF document text
    • http://ruxuvejefo.epizy.com/38299708009.pdfIn PDF document text
    • https://7fe1f042-206b-4735-a408-f56337efeeb4.filesusr.com/ugd/d34b51_dec1b853adad4cb1a71e93a43563ed6a.pdf?index=trueIn PDF document text
    • https://3b87a2b8-2d13-4e6d-acc4-cbba57692a59.filesusr.com/ugd/50988c_60cfd8e733cf44cc99fac60afbd188b9.pdf?index=trueIn PDF document text
    • http://jumepenitujox.atwebpages.com/6415983928.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011d5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D5B 5252 bytes
SHA-256: e87dcc3bd1e93696d8de4d9f170897e8cac0a7d4106809fb8176431df7790f4a
font_01_sfnt_off00012f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F1C 11180 bytes
SHA-256: e5284234f587c74a7a8532324883ba8c3a4a94ae69a6f78c24dccffd09379992
font_02_sfnt_off000154d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x154D7 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd