Malicious PDF — malware analysis report

Static analysis result for SHA-256 7627a0407f358cc2…

MALICIOUS

PDF

71.3 KB Created: 2021-02-22 12:46:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad9973ca958ade327c7aecb8cb9b2d2d SHA-1: 741d53560f5982756a9d8b37005e20e862ed1432 SHA-256: 7627a0407f358cc292c24c96d5779c16e22a94d1769113c922c00bb5a49e816e
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL disguised as a manual for a Craftsman table saw. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL points to a suspicious domain, suggesting it is used to deliver a secondary payload or redirect to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/strik?utm_term=craftsman+table+saw+model+113+manual
    • https://cdn.sqhk.co/fujalapevame/Jicibjc/in-_q-_tel_summit_2019_palm_springs.pdf
    • https://cdn-cms.f-static.net/uploads/4408707/normal_5fdc10cdbaf30.pdf
    • https://cdn.sqhk.co/zudilubal/giibibv/35993227247.pdf
    • https://cdn-cms.f-static.net/uploads/4500001/normal_602b7ac2a6cda.pdf
    • https://cdn-cms.f-static.net/uploads/4490739/normal_6012d95ace0bd.pdf
    • https://cdn.sqhk.co/mepawoworu/sthihht/free_screensavers_for_windows_7_laptop.pdf
    • https://cdn-cms.f-static.net/uploads/4496826/normal_600b2d21925cb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/julexekubaj/gosoluzekavebapirore.pdf
    • https://s3.amazonaws.com/wekibik/arches_national_park_guide.pdf
    • http://parimafilifupev.rf.gd/politically_incorrect_guide_to_the_civil_war.pdf
    • https://s3.amazonaws.com/babuxufarizuxur/here_is_new_york_democracy_of_photographs.pdf
    • https://s3.amazonaws.com/sobaketemu/short_vowel_sounds_worksheets_for_kindergarten.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce7b.bin
4cbbd71ea210089294831a9a0a8c005a89692c472840b7bee34f3175e0950845		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE7B 5408 bytes
font_01_sfnt_off0000e0d7.bin
d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D7 3720 bytes
font_02_sfnt_off0000ec3a.bin
43b916196c151e290ce46a7acf3b50bbc64c6ac1a756b01bda9613106a34af19		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3A 10556 bytes

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