Malicious PDF — malware analysis report

Static analysis result for SHA-256 557559189531a52c…

MALICIOUS

PDF

102.4 KB Created: 2021-02-19 02:51:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0a7f9d3768a4f2a7e338c56c87151070 SHA-1: e1bdd34054a7d446f3e4242f37eefefda3d31c58 SHA-256: 557559189531a52c2322a44101a2165901939d4f2d7c8af534da28981c5e4d83
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of multiple embedded URLs, including one pointing to 'crophysi.ru', suggests a phishing or credential harvesting attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/strik?utm_term=nespresso+aeroccino+plus+milk+frother+not+frothing PDF link annotation
    • http://mx50off.pro/voice_changer_app_male_to_femalevv0g1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455681/normal_5fefb102f16c2.pdfIn PDF document text
    • http://remontlegko.info/elna_lotus_sewing_machine_instruction_manualy6eab.pdfIn PDF document text
    • https://cdn.sqhk.co/lerapuraroke/gdIqiee/english_songs_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/nobukomorur/6ihig0e/fish_eat_fish_game_unblocked.pdfIn PDF document text
    • http://jususozosowi.22web.org/backtrack_5_free_64_bit.pdfIn PDF document text
    • https://cdn.sqhk.co/nepofigiper/dhaAU6h/24717492334.pdfIn PDF document text
    • http://a-trvl.ru/pegifevunam0q8s.pdfIn PDF document text
    • http://damita.fun/99517880102ptszg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372721/normal_5fc9f7b0a9542.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378621/normal_602b0cd8b89c7.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/dexodekelaseki/am_calling_you_video.pdfIn PDF document text
    • http://luzadewo.epizy.com/95197315563.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/tokatupusodijij.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/5_year_business_plan_template_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/wutaket.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/pawizukopifadu.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/consumers_energy_report_gas_smell.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001251c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1251C 5344 bytes
SHA-256: 377209d126e6736ad29825c255e02a0b880d12e997ddb5a7f1bb7dc152e9c8a1
font_01_sfnt_off0001371a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1371A 1888 bytes
SHA-256: 9cf20f25986fdec8bec48accdf627ce24269565f768f34c02d75cf970aa5593c
font_02_sfnt_off00014050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14050 10916 bytes
SHA-256: 697fbd87edb9cdc1b92d3dbb37690511f22784cedba141f07a1176ac14bdccee
font_03_sfnt_off00016550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16550 16800 bytes
SHA-256: 228edeef73303b5298e80cb754edcdb5c7596130f0e56dbf82885b11fbd2c086
font_04_sfnt_off00017cb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17CB7 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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