Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff5e3ae9a3628ae7…

MALICIOUS

PDF

78.9 KB Created: 2021-03-06 19:48:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 0123fb14def39a5c8921baa59ea7c366 SHA-1: 8934cb31180b158003ba77ee43e34f78b37a0e7b SHA-256: ff5e3ae9a3628ae76d55e84275b895f6a0a85a1516a6ec755c46af1703364e4a
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to suspicious domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically related to phishing. While no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://fokemale.ru/wix?keyword=100+doors+2013+level+25 PDF link annotation
    • http://romeoplanet.club/tewufopedopililarivenewat86f6u.pdfIn PDF document text
    • http://beremoter.online/broadacre_city_conceptn5cor.pdfIn PDF document text
    • https://megevoweroke.weebly.com/uploads/1/3/5/3/135351245/risebolewij.pdfIn PDF document text
    • http://reawolt.online/que_haria_maquiavelo6v0b7.pdfIn PDF document text
    • http://detonic-ordina.website/97967245717fggwd.pdfIn PDF document text
    • http://chestlune.online/hisense_h6_series_reviewp0p4k.pdfIn PDF document text
    • https://gopaposoxawa.weebly.com/uploads/1/3/0/7/130740193/dofexasukogiwiv.pdfIn PDF document text
    • https://pepajodik.weebly.com/uploads/1/3/1/4/131453945/tudiva-bejij.pdfIn PDF document text
    • https://pawomasa.weebly.com/uploads/1/3/4/7/134737305/5623716d4.pdfIn PDF document text
    • https://betebawaxudu.weebly.com/uploads/1/3/5/3/135388356/a0f78493901.pdfIn PDF document text
    • https://vifabuwu.weebly.com/uploads/1/3/1/6/131606679/9204517.pdfIn PDF document text
    • https://widajuzuno.weebly.com/uploads/1/3/1/6/131637349/pizele-kisokupogurex-luvujasegobin.pdfIn PDF document text
    • https://xojumupaxasa.weebly.com/uploads/1/3/4/6/134605953/1513927.pdfIn PDF document text
    • https://kofoxutekibefa.weebly.com/uploads/1/3/1/4/131454286/vevetuwubesesip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/a2b45e89-9c63-4dfd-b2cb-c0df071f8beb/pokemon_fire_red_rare_candy_cheat_gba_emulator_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/tombstone_unveiling_cards_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/19300956853.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/095b3d69-2c29-4093-8bee-6a0eccf4b1e4/70272124419.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/wamsutta_fitted_sheet_bed_bath_and_beyond.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/gavaletesibozejuvuvimemo.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/97362668764.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/gowales.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/564b944b-7633-42a8-add5-f49bb3b0cab7/streaming_film_the_painted_bird_sub_indo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e20bb45-09ee-4381-bf37-ec0327705d3d/35067510029.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/21967455726.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b917fed4-d083-41bb-bbbf-5b34a8e1edb8/what_are_the_different_types_of_curriculum_vitae.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_off0000ec06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC06 4744 bytes
SHA-256: e297b7be2f2c8aae29360d1fee91814b1a0000759581ce8386989d696047d142
font_01_sfnt_off0000fc2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC2F 10392 bytes
SHA-256: 7450642fdb9fddcdf307301dcd19467114c16c2b7a8fc1a03528565299b6bbb4
font_02_sfnt_off00011fd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FD8 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3