Malicious PDF — malware analysis report

Static analysis result for SHA-256 9532567e27cd34dd…

MALICIOUS

PDF

72.2 KB Created: 2021-02-19 20:50:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: fa0f5507222f84a8b4d401aa0efc20d2 SHA-1: 52d7efdfd796b23b7adc88558661c0d2dd88d8c4 SHA-256: 9532567e27cd34ddefe9dac4a4cf7a2ed07bb763601e3ad7a71e003978302460
222 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains an embedded JavaScript stream and a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. The PDF also exhibits a PDF_SEO_LINK_FARM characteristic, with numerous external links, many of which are suspicious. The embedded JavaScript likely facilitates the redirection or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://crophysi.ru/123?utm_term=kitchenaid+stand+mixer+attachments+bed+bath+and+beyond In PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/vighcGV/the_penguin_historical_atlas_of_ancient_egypt.pdfIn PDF document text
    • http://opensalon.xyz/22008693511qhzlm.pdfIn PDF document text
    • https://tolajugim.weebly.com/uploads/1/3/4/6/134647220/guzelopap.pdfIn PDF document text
    • http://businessmentality.com/566006599284frmz.pdfIn PDF document text
    • http://1green.space/24_ore.filma_me_titra_shqipvjm99.pdfIn PDF document text
    • http://itchia.space/total_war_trke_yamatuzpq.pdfIn PDF document text
    • http://front-glass.website/45828459091c1sm9.pdfIn PDF document text
    • https://wexopusipomela.weebly.com/uploads/1/3/5/3/135313487/6215106.pdfIn PDF document text
    • http://1cats.space/mobile_charger_circuit_diagrame7in4.pdfIn PDF document text
    • https://cdn.sqhk.co/ratevusur/ijjdhgu/mofukozesularujuxelarop.pdfIn PDF document text
    • https://joxefumisati.weebly.com/uploads/1/3/1/4/131406837/lubumibo_zotedireda_nukizawezexezu_sagesufesulunim.pdfIn PDF document text
    • http://goldotzyv.ru/dariligaziv0ja2d.pdfIn PDF document text
    • https://rixafivi.weebly.com/uploads/1/3/1/3/131380000/7802879.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/nitajosasa/gabriel_s_oboe_guitar_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/frette_king_sheet_set.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/nuwexanufazumagom.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/auto_tune_8_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/media_player_classic_for_windows.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_off0000d050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD050 5428 bytes
SHA-256: 72b04fadf45548f0815a7f205bf499f843b2eff531b58c4cbb7de9d4c836e0e6
font_01_sfnt_off0000e29d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29D 2776 bytes
SHA-256: 641d0cb5386dc0bcaa4bc48d5f80666c481778bda6dfe59f916c776b4c3dfa9b
font_02_sfnt_off0000ed7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7B 11076 bytes
SHA-256: 5b106337d3841308af37042c46d107940f549bc2a53b30d8ed14f67cdeabda18

Open this report in the interactive analyzer, or submit your own file for analysis.