Malicious PDF — malware analysis report

Static analysis result for SHA-256 e270c2cda48119a7…

MALICIOUS

PDF

92.5 KB Created: 2021-03-19 16:07:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: d55946ac9f26004202d6dd33b5724d99 SHA-1: a828ba5dcde42164dd36b615a5cc41625203926c SHA-256: e270c2cda48119a7f116c4d7f7e453decd041b8fac167871958cb9d1706f48c4
156 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, suggesting a link farm or phishing campaign. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic indicate that the document is designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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=how+to+write+an+essay+in+english+with+example+pdf PDF link annotation
    • https://cdn.sqhk.co/nuduniguwufo/digi8E7/merge_zombie_idle_rpg_guide.pdfIn PDF document text
    • http://nokojatagi.mywebcommunity.org/31302147232.pdfIn PDF document text
    • https://cdn.sqhk.co/tosuwukiwate/EjeEgi2/dark_side_of_the_moon_tattoo_shop.pdfIn PDF document text
    • http://zitokujamu.mypressonline.com/nivozelinazolofarenuzezu.pdfIn PDF document text
    • https://cdn.sqhk.co/fowipovoji/jf6Bkjh/el_arte_de_la_guerra_gratuito.pdfIn PDF document text
    • http://wubujonil.getenjoyment.net/galinufibiron.pdfIn PDF document text
    • http://sopisafexuj.sportsontheweb.net/suluduteje.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/f67c5c7d-0258-4119-92cf-dcc56c378ee4/86258187360.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/086477ad-35bf-424f-a685-e6b537965ea6/paulo_coelho_the_archer.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/78290735486.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/sun_diego_rock_me_amadeus_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/english_horror_movies_free_hd_quality.pdfIn PDF document text
    • https://3f735f5a-cd1c-4288-bd93-adeff6e084d9.filesusr.com/ugd/bcc0e4_488cfbf3d580431790fbc7880cbd3b83.pdf?index=trueIn PDF document text
    • https://2903667b-e544-4972-ac7f-e5855aaa9b37.filesusr.com/ugd/2cc660_68cfd66a632542a18bf852ae47467761.pdf?index=trueIn PDF document text
    • http://sonarubitexo.atwebpages.com/jalujizobujibi.pdfIn PDF document text
    • https://f72e0e13-a873-49c5-9cb5-3c2848b8c5b2.filesusr.com/ugd/f8ba4b_09a10a6c199d4acf821aebd2694edeef.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a0ff111-caaa-48ed-8c3f-7590be64b465/8111695827.pdfIn PDF document text
    • https://488a161d-122f-4e25-b35e-34d1d0e27b34.filesusr.com/ugd/bbc910_ff19d0042bbf4ce3a0d642221cac5316.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff221b33-7ab6-4975-a4f4-b33252f6b9bb/55755388491.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/weduwesovexivokuletuji.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/vukusafoxiresuvoko.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_off00012932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12932 5676 bytes
SHA-256: b2ee014f53a68b2dbcee8f9affab84d6edad8ba1d79db154350fee6514e8eb34
font_01_sfnt_off00013c6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C6F 11168 bytes
SHA-256: 3acbc0b408744edfa40c38fb47f5bbc31e8618fa2354efbc4dc875deab45b93a

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