Malicious PDF — malware analysis report

Static analysis result for SHA-256 96767febee9cbdb1…

MALICIOUS

PDF

79.4 KB Created: 2021-04-01 05:58:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 766395f7049e5c27057e1589c44d7439 SHA-1: 50f9d3c91bf3b905c4665aa2224ab33b80026cd5 SHA-256: 96767febee9cbdb1becbf8661ff3f7f48efbaaf204bfe198d7ae0074ab39d38b
164 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to S3 buckets and other hosting services, suggesting a link farm or distribution mechanism. The presence of a critical heuristic for PDF SEO link farm and ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates malicious intent. The document body, though heavily obfuscated, contains fragments related to 'realtor code of ethics' and 'wkhtmltopdf', potentially used as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://midufefew.ru/aws?utm_term=the+realtor+code+of+ethics+protects PDF link annotation
    • https://batapasupo.weebly.com/uploads/1/3/1/4/131482803/musakativ-samededatelekiv-pajageba-zuwulur.pdfIn PDF document text
    • http://bukibiroxofin.22web.org/34804038502.pdfIn PDF document text
    • http://mivetys.xyz/age_rating_for_miss_peregrine_book3novi.pdfIn PDF document text
    • https://ritosameb.weebly.com/uploads/1/3/4/2/134266106/a356b409e8a.pdfIn PDF document text
    • http://dlkmvkoenv.info/dimeki63y2q.pdfIn PDF document text
    • http://nesobaka3.xyz/is_there_going_to_be_another_divergent_bookpp80x.pdfIn PDF document text
    • http://fakaripeti.xyz/3109394627krvuh.pdfIn PDF document text
    • http://lodaratixerezo.22web.org/45396706037.pdfIn PDF document text
    • http://epaytds.xyz/wugebugejatuxajumowapipon.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/serogajugomiji/84466890723.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/76813764627.pdfIn PDF document text
    • http://fusivud.epizy.com/gikubok.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/99614738395.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/sutabibum.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/dell_latitude_e7470_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6bb016d-6921-4adc-aadb-9b367d4af35e/alexander_the_great_full_movie_1956.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7657ff5-d13e-4bbd-b7a1-6fe0ffb8252d/escuela_psicologica_humanista.pdfIn PDF document text
    • http://vedujekobizu.rf.gd/excel_functions_full_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4561872a-8723-472c-8348-f76459063b16/safety_data_sheet_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/793c8ccd-9a49-435e-b996-8af37ce3c8fb/kepovoregijesejukada.pdfIn PDF document text
    • http://degedudu.rf.gd/banodaxunibekomirewuta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c9b0022-19f9-4d72-aa85-1638e3fcc95a/biruvetabalobekapigekizu.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_off0000f7fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FE 5192 bytes
SHA-256: e94e7f34f28ae9be58ba3733c457640cade3d2286837b0486978a51a177f2e1d
font_01_sfnt_off0001099b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1099B 11324 bytes
SHA-256: 408e9b8678d626e54a1283ff545a73123ca0d45340237930e952067822a569fb

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