Malicious PDF — malware analysis report

Static analysis result for SHA-256 89051f94e45278dc…

MALICIOUS

PDF

90.5 KB Created: 2021-05-18 22:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 095da99c7073516344e75d6eb6067af5 SHA-1: 0657f1cf4d221b86be0bd2057b777fa5d5ff5466 SHA-256: 89051f94e45278dc0ed78743fb2f39751de161b3b73b7831bac87ac01cf7836e
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a PDF link farm, with one primary malicious URL pointing to 'golowaki.ru'. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the PDF structure and link farm heuristic suggest an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://golowaki.ru/strik?utm_term=how+to+pray+for+god+to+answer+immediately PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446260/normal_601d375052732.pdfIn PDF document text
    • https://bafuselowazela.weebly.com/uploads/1/3/5/3/135318440/8251025.pdfIn PDF document text
    • https://sulefufevonabu.weebly.com/uploads/1/3/4/3/134363738/d12c299.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458394/normal_605cfc1c3d557.pdfIn PDF document text
    • https://jevixivuxed.weebly.com/uploads/1/3/4/6/134622771/mowideniz_pemobibini.pdfIn PDF document text
    • https://litiwufedoza.weebly.com/uploads/1/3/0/7/130739575/vanefobifepi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387699/normal_6005d5ee0849d.pdfIn PDF document text
    • http://mabapip.22web.org/mechanical_reasoning_questions_and_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482860/normal_6014b044f122e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405437/normal_60009402dd7a9.pdfIn PDF document text
    • https://fivubiforozoxi.weebly.com/uploads/1/3/4/6/134676017/votezifu_bawenu_nefobe_puxaf.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/pevuwarobuvowa/quote_from_hitchhikers_guide_to_the_galaxy_42.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/lcvp_exam_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/alpsankhyak_form_rajasthan.pdfIn PDF document text
    • http://lepamiruketujuf.epizy.com/52674540752.pdfIn PDF document text
    • http://votarodajogagup.epizy.com/arduino_uno_software_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mevuzokekenojab/african_leadership_academy_scholarship_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/sig_sauer_p226_paddle_holster_with_light.pdfIn PDF document text
    • http://wuwusawoviwu.rf.gd/sabebaziganofiwu.pdfIn PDF document text
    • https://s3.amazonaws.com/popilo/hp_photosmart_5510_scanner_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/nivotuwobewokune.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/zoxesolepemukomomenamo.pdfIn PDF document text
    • https://s3.amazonaws.com/lazesej/ibm_websphere_message_broker.pdfIn PDF document text
    • http://xatabebufu.epizy.com/is_ponniyin_selvan_a_real_story.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_off00010e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E69 5516 bytes
SHA-256: 8dafdacbe8643fcb27b26fcdb9a6446e4ae3ccf08181a209e44fb9fcd56d4767
font_01_sfnt_off00012131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12131 10652 bytes
SHA-256: 8262d96f1a74c52309f3d9763b7c1dd408878536afbf8e6a8867fa0fe0e3117a
font_02_sfnt_off000145d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145D6 16036 bytes
SHA-256: 354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb

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