Malicious PDF — malware analysis report

Static analysis result for SHA-256 70a00939b606a34f…

MALICIOUS

PDF

85.2 KB Created: 2021-02-22 22:55:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: c7de39b857bd39ce8e375b18e0fbdf94 SHA-1: 7041b67636dbd12036c002f56aa7d33d81e9b794 SHA-256: 70a00939b606a34f313bf608bb8cbbc239bda09a7de33cb128e2d7a7153c06fb
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains a URL that appears to be a lure for users searching for specific information. The presence of an external URI and the ML classification strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/123?utm_term=what+is+caste+meaning+urdu PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387712/normal_6016f2bd21c01.pdfIn PDF document text
    • https://cdn.sqhk.co/zokuwagopole/giiaIjb/79446118280.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469126/normal_5fdc89222001e.pdfIn PDF document text
    • https://cdn.sqhk.co/jekuzedu/hgiRUie/15591602834.pdfIn PDF document text
    • https://cdn.sqhk.co/gesokusa/hd4Tjii/89422231519.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406501/normal_602c7d1e24427.pdfIn PDF document text
    • https://cdn.sqhk.co/fafovewidom/cWLEifx/domino_effect_meaning_in_urdu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458839/normal_5fce46cfc3810.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/53jgZAT/26361440524.pdfIn PDF document text
    • https://cdn.sqhk.co/zafowavo/gkUhd7P/california_king_bedroom_furniture_sets_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/bobimugura/ZlgfXcU/hidden_object_games_for_android_without_ads.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/wixanarer/83111487163.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/wasezokarin.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/45561540017.pdfIn PDF document text
    • http://kajufikuxididon.rf.gd/vadujoxutulopefadikaget.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/que_es_almacenamiento_de_alimentos.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00011fdc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11FDC 22244 bytes
SHA-256: 1b2d0a19c9a559edcd345557e10035d25c2535566ab379efe61334d20d4554cc
font_00_sfnt_off0000dee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE5 2872 bytes
SHA-256: ea18d12de3b231b305d916e97a9b3fe700a81a38429b6dccd25d7533a54d13f8
font_01_sfnt_off0000e921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE921 5336 bytes
SHA-256: e28c6d2bd2031a279f8d9ffa8c4f2594377bdce78968b33573958fccadefc3be
font_02_sfnt_off0000fb25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB25 10720 bytes
SHA-256: 51841d2f4f1acd89f10caac7981130d784019cf86f515632e2cc8a2aa61b11ed

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