Malicious PDF — malware analysis report

Static analysis result for SHA-256 02bdecc0516c8f10…

MALICIOUS

PDF

98.5 KB Created: 2021-05-17 12:23:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: dbacebf6ddfcbe979f0105f97d51db58 SHA-1: 7148f879372b35126e61e134714d8eaf8ead33d2 SHA-256: 02bdecc0516c8f10fe07abf0faf36af106fc399cb3af8c429385c4654b5f5c99
164 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://vilenefex.ru/strik?utm_term=2005+6.0+powerstroke+engine+harness PDF link annotation
    • https://wixilasiniwib.weebly.com/uploads/1/3/1/1/131163505/d7a9ab3522.pdfIn PDF document text
    • https://mazerobuwi.weebly.com/uploads/1/3/1/3/131398334/8456762.pdfIn PDF document text
    • https://gixopujo.weebly.com/uploads/1/3/0/7/130775076/zatotibala-tefomazofub.pdfIn PDF document text
    • https://xidumalebuwun.weebly.com/uploads/1/3/4/8/134894794/51feae8b9a5fc.pdfIn PDF document text
    • https://fogofude.weebly.com/uploads/1/3/4/3/134322730/a75f63fdfcdac13.pdfIn PDF document text
    • https://fuzimisadu.weebly.com/uploads/1/3/5/3/135319831/67cd7b4e.pdfIn PDF document text
    • https://diwuxofemuji.weebly.com/uploads/1/3/1/4/131407179/c2939d.pdfIn PDF document text
    • https://napokepuwaju.weebly.com/uploads/1/3/1/1/131164128/vulut.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://s3.amazonaws.com/jemisajoda/verithanam_song_sharechat.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/93255025821.pdfIn PDF document text
    • http://kofodubelo.rf.gd/atmel_studio_7_c.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/88986901908.pdfIn PDF document text
    • http://fefomopopokelo.epizy.com/lonely_planet_cuba_espaol_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/83911834952.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/gabupawediresosalenaxukif.pdfIn PDF document text
    • http://nilexidudi.epizy.com/81592456743.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/annotation_guide_worksheet.pdfIn PDF document text
    • http://fukatotapi.epizy.com/do_the_sat_subject_tests_matter.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/how_to_do_printed_heat_transfer_vinyl.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/ctet_exam_2019_answer_key_paper_2.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/the_titans_curse_audiobook.pdfIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/kathi_bgm_jukebox_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/51845273697.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/47127951040.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/microsoft_office_for_macbook_pro_free.pdfIn PDF document text
    • http://bolakelepexiruj.epizy.com/minn_kota_power_drive_v1_foot_pedal_wiring_diagram.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011c37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C37 5484 bytes
SHA-256: 6e78718f661a71329d139828824b0127b78792510a59b88f73b9cf28dad9544d
font_01_sfnt_off00012edb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EDB 11532 bytes
SHA-256: 34ea99cebe20678e9100cc9cfaba399bc29428ed09a91c547c2e1c47ceb69609
font_02_sfnt_off00015621.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15621 16404 bytes
SHA-256: 3a03afcc14d657f9f65aa49b71605a86dac242082172d6bc1b97510aeb9d469c
font_03_sfnt_off00016c32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C32 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71