Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f077018437c29d7…

MALICIOUS

PDF

75.4 KB Created: 2021-02-28 04:58:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 86d7899edb56687fe16fdacfa8a5a4e7 SHA-1: 11b633ed0c8b8779f721fefa6a4e55cd940c8960 SHA-256: 3f077018437c29d7a6daa2e61d9243ddd3d2b64eee21b41e351aa56d3680cfca
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are structured as SEO-style links to PDF documents, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. The embedded URLs point to suspicious domains, likely serving as lures for users searching for software.

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://soxebez.ru/wix?keyword=2xl+mx+offroad+apk+data+mod PDF link annotation
    • https://wobosiwax.weebly.com/uploads/1/3/1/6/131607505/luwazuzekoj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445745/normal_5ffc5b7a723c6.pdfIn PDF document text
    • https://cdn.sqhk.co/xopuxuvop/XCjixgc/2068387125.pdfIn PDF document text
    • https://cdn.sqhk.co/konafomaz/eHShaTS/part_time_dental_assistant_jobs_toronto.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370062/normal_5ff9ab7169282.pdfIn PDF document text
    • http://bedinujaketapur.22web.org/are_prepositions_capitalized_in_titles_mla.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424025/normal_60176ade41f77.pdfIn PDF document text
    • https://dojibabebane.weebly.com/uploads/1/3/2/6/132682208/e048ef11ad1.pdfIn PDF document text
    • https://cdn.sqhk.co/fegadosijete/AidIeKq/color_touch_effects_apk.pdfIn PDF document text
    • https://gumebasa.weebly.com/uploads/1/3/4/5/134509515/5518342.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tabifewegijip.epizy.com/laliwas.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/luwadebamonoranidewe.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/kedijitejetazetara.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/zowegubarekivudim.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/96312913851.pdfIn PDF document text
    • http://tasifomarefid.rf.gd/aerie_pharmaceuticals_email_format.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/kubegobuwusigebov.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/badlands_12000_winch_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/free_prepaid_expense_schedule_excel_template.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_off0000eb66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB66 5176 bytes
SHA-256: 824e533087f194f43486a8616eb47fe969e1e6aee7a49a1b6b230c715791fed1
font_01_sfnt_off0000fcf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF2 10400 bytes
SHA-256: 2b4f9e98d7151d5f9b18c4609acffb4b4c7831683723f498b26ba780f71397e3

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