Malicious PDF — malware analysis report

Static analysis result for SHA-256 a16cb824e5fe86df…

MALICIOUS

PDF

85.7 KB Created: 2021-02-15 22:24:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 46ebffb6457eb09bca4f093b68e8d886 SHA-1: b0771aab5424d89a5f39e1c1de869a65948467af SHA-256: a16cb824e5fe86df5f845719c49e2109283c6fc1cd30257ff342cfaf325035ad
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, disguised as a search result for popular media. This URL is likely intended to lead the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/123?utm_term=order+of+marvel+movies+avengers PDF link annotation
    • http://wuwisometojone.66ghz.com/bootable_windows_7_dvd.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/zuwimadaneb/66479791795.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/mogubabigapuluzenatow.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/boss_2_bangla_movie_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/magnesium_die_casting_process.pdfIn PDF document text
    • http://faxarase.rf.gd/song_attention_lash_remix.pdfIn PDF document text
    • http://dumatefofexulen.epizy.com/wonder_movie_teaching_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/sesix.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/784726481.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/faecal_coliform_diseases.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/56756967637.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/68029870979.pdfIn PDF document text
    • http://vusanaxipunuli.rf.gd/kamev.pdfIn PDF document text
    • http://bolopanezodubun.rf.gd/16069729099.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/43780131572.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/11979551628.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/29818926021.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/i_would_like_to_meet_you_formal.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000112aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112AA 5312 bytes
SHA-256: 95822db29bd68f3e41fe13dccd33fc10cd438a25367cac18d1a2ac299bf33839
font_01_sfnt_off000124a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124A9 10876 bytes
SHA-256: 886512ddde34b760103dc9ee3517090649be050404bc78a5b0dcefa6cd8a1fe1

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