Malicious PDF — malware analysis report

Static analysis result for SHA-256 f12ae7044e6a58a0…

MALICIOUS

PDF

107.3 KB Created: 2021-02-16 00:44:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 1a391c47537a8a165756431eb92f26b0 SHA-1: 37949d8fd0431b8a802c10f4b5d449f87c4202e7 SHA-256: f12ae7044e6a58a01f1cadd7165797e4113f92a1c82e6eb7d80273f1c3b671d7
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to contain metadata related to the embedded URI's apparent search query, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=robin%20hood%20prince%20of%20thieves%20imdb%20parents%20guide PDF link annotation
    • http://selectgetc.top/linksys_re2000_reviewyflsw.pdfIn PDF document text
    • http://outputqwvk.space/carranza_periodontics8wxrx.pdfIn PDF document text
    • http://draiwenstore.online/murray_ms2550_weed_eater_manualr96m8.pdfIn PDF document text
    • http://idealicait.website/optimist_or_pessimist_testwq8mb.pdfIn PDF document text
    • http://goossyy.online/64841302072n1b56.pdfIn PDF document text
    • http://netewe9.xyz/residential_building_inspector_study_guideqovnx.pdfIn PDF document text
    • http://romeital.space/the_arsonists_playhsz7u.pdfIn PDF document text
    • http://get3creditscores.info/5229585936614wk2.pdfIn PDF document text
    • http://euromarket.pro/nilaxuzet4l1q.pdfIn PDF document text
    • http://itslm.fun/noguwenimijegafusofizox6kjfl.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/viboxikuz/61333661964.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/48867851630.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/aplicaciones_android_cubanas.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/48316141943.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/81449970521.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_off00014b79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B79 5624 bytes
SHA-256: 7b5c329177ceafb3f8da309d60faaaa98e1b428c7463f26e7e532d5f8e024d2d
font_01_sfnt_off00015e5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E5F 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off000169c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169C2 11880 bytes
SHA-256: a97cca9f494827d4b9512cb87c518882d429ab03e9a14d17ca9a140bd942ef45
font_03_sfnt_off0001914d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1914D 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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