Malicious PDF — malware analysis report

Static analysis result for SHA-256 e576dc065bd515eb…

MALICIOUS

PDF

81.4 KB Created: 2021-01-17 06:12:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: fd48bab5a52194b67385a90fec2b2a49 SHA-1: 2fe2057fc35a147a01050cc0182ef599f2a280a5 SHA-256: e576dc065bd515ebba5f6a6d9b63c46fed1ea80bcde6451704a32c1be052e9c3
256 Risk Score

Malware Insights

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

This PDF is identified as malicious by ClamAV and a machine learning classifier, exhibiting characteristics of a credential phishing lure impersonating Apple. It contains numerous external links, many pointing to PDFs hosted on various platforms, suggesting a link farm or redirection strategy. The document body, though heavily obfuscated, contains text related to 'recovery apple account password', reinforcing the phishing theme. The presence of external links and the nature of the phishing lure indicate potential for further malicious activity, such as downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://bobujiwa.weebly.com/uploads/1/3/1/0/131070874/4374273.pdf.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://trafficel.ru/123?utm_term=recovery+apple+account+password PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369797/normal_5fd19e9a68fbf.pdfIn PDF document text
    • https://bobujiwa.weebly.com/uploads/1/3/1/0/131070874/4374273.pdfIn PDF document text
    • https://papokerudinex.weebly.com/uploads/1/3/4/3/134310480/pewuj-fasiru-gosiz.pdfIn PDF document text
    • https://cdn.sqhk.co/kifuzopeko/gcgj2gf/apache_attack_helicopter_shoot_to_thrill.pdfIn PDF document text
    • https://zujuwaxi.weebly.com/uploads/1/3/5/3/135307850/3504776.pdfIn PDF document text
    • https://nigikejogu.weebly.com/uploads/1/3/4/9/134902550/bedufokaku-karujivugepuxow-zilebidepom.pdfIn PDF document text
    • https://sunanineriputa.weebly.com/uploads/1/3/2/7/132740954/9274725.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/c1hjii8/banana_runtz_bags.pdfIn PDF document text
    • https://gapefupekud.weebly.com/uploads/1/3/1/8/131871489/96bada.pdfIn PDF document text
    • http://www.typoland.com/http://www.typoland.com/designers/Lukasz_Dziedzic/CopyrightIn PDF document text
    • http://www.typoland.com/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/26062177645.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/jopusitubalufegex.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/android_network_graph_library.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/zulisat.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/physics_grade_12_textbook_answers.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE860 6168 bytes
SHA-256: 50bd8db5ff9a0f03ea6ac0366ab4ff273dceb6ff0c6101ac0faff1fd52ccc92d
font_01_sfnt_off0000f802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF802 5328 bytes
SHA-256: 9af65870fb4adf8c87ed1d6711c15de67128708f02e810410578d02a3dd93a92
font_02_sfnt_off00010a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A4B 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_03_sfnt_off000115ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115AD 9864 bytes
SHA-256: dcdb5be34a1078d48692385b4f142ac325628e988240d8085549b5643c03345b