Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cb68a3f186a96e0…

MALICIOUS

PDF

102.9 KB Created: 2021-03-29 11:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: acc73d03acd498f8b4353d4bdbc2fce7 SHA-1: 5b3092b18425d88974f88fb72ce6237385fada9b SHA-256: 6cb68a3f186a96e0ce9ba6c82558ca26a056d40e66a85877151679152540d852
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing or malicious document, including a large number of external links designed to appear as an SEO link farm. The primary external URL points to a site that is likely involved in distributing malicious content. While no scripts were explicitly extracted, the PDF structure and the presence of external links suggest an attempt to redirect users to a malicious site, potentially for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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://seumenha.ru/wix?keyword=casio+pcr-t2300+electronic+cash+register+manual PDF link annotation
    • http://gusevoxuzuwelap.mywebcommunity.org/catecismo_de_la_iglesia_catolica_vaticano.pdfIn PDF document text
    • https://gebejisidimi.weebly.com/uploads/1/3/5/3/135302949/fediwolirar.pdfIn PDF document text
    • https://zasosefudasu.weebly.com/uploads/1/3/1/8/131856937/9975642.pdfIn PDF document text
    • https://buvikibera.weebly.com/uploads/1/3/1/4/131453013/tawam.pdfIn PDF document text
    • http://vitofemegawe.getenjoyment.net/tijanesutul.pdfIn PDF document text
    • https://peminikagi.weebly.com/uploads/1/3/1/8/131856713/fapudoraj.pdfIn PDF document text
    • https://jewepixixa.weebly.com/uploads/1/3/0/8/130814248/47770d461.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/94240751159.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/commodores_easy_piano_sheet_music.pdfIn PDF document text
    • http://dolanuvusipegu.myartsonline.com/broiler_farming_project_report.pdfIn PDF document text
    • http://lozekav.epizy.com/refuxud.pdfIn PDF document text
    • http://vogasuzifen.rf.gd/10181030544.pdfIn PDF document text
    • http://sawurawefivovo.myartsonline.com/best_targets_for_200_yards.pdfIn PDF document text
    • http://tafekeremo.epizy.com/deviantart_button_template.pdfIn PDF document text
    • http://texilubaku.rf.gd/definition_of_developmental_delay.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/lipenubuposazajifijit.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/kitchenaid_professional_6000_hd_vs_pro_600.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/the_stranger_in_the_woods_nyt_review.pdfIn PDF document text
    • http://zitadufafasid.onlinewebshop.net/dofuwefajusesugidifeni.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/colon_cancer_european_guidelines.pdfIn PDF document text
    • http://rarefovukafulu.rf.gd/caucasian_chalk_circle_themes.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/the_lord_of_the_rings_the_return_of_the_king_gameboy_advance.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_off0001467a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1467A 5724 bytes
SHA-256: 6f7949c3bb2f6976e83f785e729068cbe9ac0a5b472bc631a4469c91990725f3
font_01_sfnt_off000159bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x159BD 2204 bytes
SHA-256: 12ae71d23fc0d69ba2134e25a5d5099581837be12a1e42cff8be29aaa57c815b
font_02_sfnt_off0001635e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1635E 12468 bytes
SHA-256: 2163e090a257d13b3bf20c0c4902445b6e65017b7cf5fa92233800c234bbe54f

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