Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6e1a2ba0a0c594c…

MALICIOUS

PDF

71.8 KB Created: 2021-03-18 16:36:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: d964e5fac41ee40f8576c090b4a693da SHA-1: 5a2fb685634f7e91bea1b095c0255492e805c063 SHA-256: b6e1a2ba0a0c594c5c1c94a61baa3f28c37e83d9953d28f87fc52c3057492e6f
126 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs, with one specifically pointing to a domain associated with phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document's content, though heavily obfuscated, appears to be a lure related to 'pool pump impeller replacement', suggesting a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://seumenha.ru/strik?utm_term=summer+waves+pool+pump+impeller+replacement PDF link annotation
    • https://cdn.sqhk.co/pavujakorige/XhfsWlH/galaxy_attack_space_shooter_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419410/normal_60525a0f1e0d8.pdfIn PDF document text
    • http://tigafik.mygamesonline.org/27482888168.pdfIn PDF document text
    • http://kositexujir.sportsontheweb.net/ibps_rrb_po_notification_2020.pdfIn PDF document text
    • https://vakasuvarepem.weebly.com/uploads/1/3/4/3/134328097/78f513dae2497.pdfIn PDF document text
    • http://sowipilarow.mygamesonline.org/how_to_write_a_step_outline.pdfIn PDF document text
    • http://deemonatrafik.xyz/vojexoxugew4ugr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_602e7179d6ada.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/what_is_the_scout_motto.pdfIn PDF document text
    • https://cdn.sqhk.co/rizuwevize/4gfghc2/led_signal_tower_stack_lights.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/SehbAnk/xawopotagumizamez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475565/normal_6016e5db25f9c.pdfIn PDF document text
    • https://cdn.sqhk.co/lazimafuxuxi/ijj0Gje/87284191055.pdfIn PDF document text
    • http://free-at.pro/vidoxaxisilubibulirla2u.pdfIn PDF document text
    • https://wevejabunom.weebly.com/uploads/1/3/1/4/131406075/6769c230.pdfIn PDF document text
    • https://waruzakelejabu.weebly.com/uploads/1/3/4/6/134600446/052fa2f.pdfIn PDF document text
    • https://tidukefawa.weebly.com/uploads/1/3/4/8/134851120/tadilusipisufoneki.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/iihhef5/96373328558.pdfIn PDF document text
    • http://jipolavex.medianewsonline.com/symbolic_interactionism_in_sociology.pdfIn PDF document text
    • https://boxagabopevonud.weebly.com/uploads/1/3/4/3/134353696/vegif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pigutun.myartsonline.com/ansys_workbench_training_manual.pdfIn PDF document text
    • http://kofaxafogi.myartsonline.com/24051877635.pdfIn PDF document text
    • http://pigutun.myartsonline.com/65956794680.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_off0000d7bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BB 5332 bytes
SHA-256: d3b9733f6f1e7c90961801e2c250731923801222a2b28718756411fd0107cb80
font_01_sfnt_off0000e9da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DA 11600 bytes
SHA-256: 4b3e42b1fe49de03477a53ccdfbb085565bdc4b0101a80a8b87b1542a7ced47a

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