Malicious PDF — malware analysis report

Static analysis result for SHA-256 102a8261a10e086b…

MALICIOUS

PDF

75.5 KB Created: 2021-05-02 16:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 7151ca7523077ac6cfa6a1d427f3dbbd SHA-1: 21dd0607d42b02211e5ad867214789a4444ec0e7 SHA-256: 102a8261a10e086b1f866c98b7197899244c1f6f8c9f2d865ca62404321c1b9a
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 by the PDF_SEO_LINK_FARM heuristic, suggesting a malicious intent to redirect users. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were directly extracted, the presence of embedded URLs and the heuristic firings indicate a phishing or link-farming attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/strik?utm_term=char+broil+big+easy+turkey+fryer+recipes PDF link annotation
    • https://sofotegepure.weebly.com/uploads/1/3/4/5/134522016/7353515.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476146/normal_5ff8caa97076f.pdfIn PDF document text
    • http://fevofawemuwa.medianewsonline.com/lavumolepesovugarure.pdfIn PDF document text
    • http://debuged.mywebcommunity.org/sales_marketing_techniques.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474218/normal_5fcaea8957dd1.pdfIn PDF document text
    • http://bodegumuxizobi.22web.org/51590176560.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495409/normal_604fa65aaac8d.pdfIn PDF document text
    • https://rifijilaguselud.weebly.com/uploads/1/3/4/8/134846829/930e7247322658.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/gomakobez/dikuvavezowirujerogosada.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/brazil_national_flag_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd8a6cfe-91b4-44b3-a19c-9daf5df0169e/how_to_make_a_water_bottle_dispenser.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/forensic_science_entomology_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/nosigimeferutegib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/309e18d9-8ffb-440e-847e-d00e7a70ece3/22865727777.pdfIn PDF document text
    • http://sijaxulo.rf.gd/character_strengths_and_virtues_handbook.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/patujepotota.pdfIn PDF document text
    • http://vegozamefokim.rf.gd/lunalopibexenavewuv.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_off0000e513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE513 5488 bytes
SHA-256: efa890cba60cda87074a8d94961b8fbb8c09ba7ebf3e7ec4ce4e182fe41cae1b
font_01_sfnt_off0000f7c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C0 11396 bytes
SHA-256: c6ece15c94fd52da6ad56ec66043f678607e34b4ac95a1d86a145fac739b1017

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