Malicious PDF — malware analysis report

Static analysis result for SHA-256 30bc195975bf6f75…

MALICIOUS

PDF

75.1 KB Created: 2021-02-27 05:52:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: a16f9b470569741d00d0d831010fb5be SHA-1: 3bd661e217d76dcf85bf594f18d1339aa5195729 SHA-256: 30bc195975bf6f75d1312eb24315152a67cd99f5263a7b5e94fd6907f2e2d923
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, including one that mimics a search result for technical information, suggesting a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/award?keyword=how+to+reset+a+maytag+bravos+mct+washer PDF link annotation
    • http://gisoboxizaza.mygamesonline.org/daromibugijaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371786/normal_601c6722464c1.pdfIn PDF document text
    • http://uniques.space/94029565670dan8f.pdfIn PDF document text
    • http://nupigit.22web.org/57620712216.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_60170679b62fc.pdfIn PDF document text
    • http://nebofimanigi.sportsontheweb.net/petsafe_drinkwell_fountain_reviews.pdfIn PDF document text
    • http://help-igcopyright.xyz/advanced_accounting_solutions_manual_hamlenug4ni.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478398/normal_5fc84cd3867a9.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/Jjf3qBg/levudogetetuxunuva.pdfIn PDF document text
    • http://wekeb.space/what_kind_of_rail_is_on_a_marlin_model_609yqn2.pdfIn PDF document text
    • http://cyberlife.store/vuravivukigowajivuzajopipbibsn.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzosiboweja/bJfhjih/shooting_3d_video_with_two_cameras.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
    • http://napalujimawoz.rf.gd/avast_antivirus_full_version_offline.pdfIn PDF document text
    • http://zerakunutage.epizy.com/pcos_metformin_dosage_weight_loss.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC53 5168 bytes
SHA-256: 2276b88aae52cbbec1810516d1ba379391d1cc59120e21faade99c9d68128223
font_01_sfnt_off0000ee03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE03 10196 bytes
SHA-256: e5c099516b73c80834a54ae1fbf3a975847daefeaa4cd8e1c65d4f66475bab98
font_02_sfnt_off000110dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110DC 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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