Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf37577186602964…

MALICIOUS

PDF

70.7 KB Created: 2021-03-02 02:22:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 849470fd07a06a11ef66d9f21500c0f2 SHA-1: e8d928cb001e4a76a20847ded84b6a1367311da5 SHA-256: bf37577186602964ce89c4f2a5e5eabb98785feba437fd3ab34690e6b0068097
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to a game, which is a common tactic for phishing or malware distribution.

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://jottigo.ru/wix?keyword=strike+force+heroes+unblocked+3
    • https://wesuzimowigimeb.weebly.com/uploads/1/3/4/7/134745326/larakupaka_kudege_rofojufenafide_povomapix.pdf
    • http://nefuzixitelu.iblogger.org/journalizing_transactions_worksheets.pdf
    • https://mikakegurotitu.weebly.com/uploads/1/3/4/3/134309030/zomufubipewu_rarufuwodame_lisixe_famulixozawo.pdf
    • http://mugedly.xyz/213899752356uee2.pdf
    • http://ketrovk.xyz/mepelevox1m3vt.pdf
    • http://kemamibuke.mygamesonline.org/what_is_the_difference_between_dog_and_cat_frontline.pdf
    • https://dewosuto.weebly.com/uploads/1/3/1/4/131453399/rugasikepefudazeb.pdf
    • https://ripukalogud.weebly.com/uploads/1/3/4/3/134391837/305ce4a.pdf
    • https://tulivugid.weebly.com/uploads/1/3/4/6/134607321/c0ba5c24a0e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kovemipenege.rf.gd/98966449566.pdf
    • http://zusujijotajirun.epizy.com/chemische_formel_zeichnen_online.pdf
    • https://s3.amazonaws.com/jokotaziweluge/kuvevake.pdf
    • https://s3.amazonaws.com/tibitexil/wimunopataletojokevuget.pdf
    • https://s3.amazonaws.com/jenagubadopi/12199340633.pdf
    • http://metewerozize.rf.gd/carbon_democracy_review.pdf
    • https://s3.amazonaws.com/ratixifo/hypertension_guidelines_elderly_canada.pdf
    • http://tujukiji.rf.gd/bitten_imdb_parents_guide.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7f1.bin
2d65cb0ca4f70d9fc252b671bc1c958b0641072b592c1dc7d09fcfd46b5a721c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F1 5372 bytes
font_01_sfnt_off0000ea37.bin
aeb6bbc3eec068caea7dda9dd55c2185b8bc1e874d1f3781980451bd33c2df09		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA37 10412 bytes

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