Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c0ee54b469c417c…

MALICIOUS

PDF

73.5 KB Created: 2021-05-18 12:05:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f429ded9769faea348c701c21e5096c0 SHA-1: b6b4cb00785c0d16b3e0cc319190e60924c13c4b SHA-256: 7c0ee54b469c417cfb985325e84f655ee7c13a7a95d4b45072c7ea3893827c19
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains a large number of external links, suggesting a link farm or phishing lure. While no scripts were explicitly extracted, the PDF structure and external links are indicative of techniques used to redirect users to malicious sites, potentially for credential harvesting or malware distribution.

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 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.
  • 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://bologen.ru/strik?utm_term=is+the+army+going+to+pinks+and+greens PDF link annotation
    • https://kiruxujekan.weebly.com/uploads/1/3/2/7/132740547/345da.pdfIn PDF document text
    • https://riluvozig.weebly.com/uploads/1/3/4/3/134380056/kidopo.pdfIn PDF document text
    • https://furadigiwib.weebly.com/uploads/1/3/1/4/131407367/b37c2.pdfIn PDF document text
    • https://bovimifukid.weebly.com/uploads/1/3/4/8/134882826/a1819fd25d9.pdfIn PDF document text
    • https://jubipolofolexi.weebly.com/uploads/1/3/2/3/132302872/bibomeseses_gukote_jodekogesejaki_zofonalozori.pdfIn PDF document text
    • https://fovodonote.weebly.com/uploads/1/3/2/7/132740633/tukigowapojokuduva.pdfIn PDF document text
    • https://pevarigemi.weebly.com/uploads/1/3/5/3/135303959/goweniwi_fajijitolaj_feneno_lifimovatonino.pdfIn PDF document text
    • https://tijukubi.weebly.com/uploads/1/3/4/4/134458902/zuxizujelex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476126/normal_5fe11ba5699e0.pdfIn PDF document text
    • https://sevozinevuzejok.weebly.com/uploads/1/3/4/9/134903388/zedenaxidibidujekoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377931/normal_606d6c7118d25.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370989/normal_5fc629175421c.pdfIn PDF document text
    • https://fajorisovobune.weebly.com/uploads/1/3/4/7/134752278/jekelovu.pdfIn PDF document text
    • https://fularoxu.weebly.com/uploads/1/3/1/4/131452806/sazebudupekif.pdfIn PDF document text
    • https://kebopudej.weebly.com/uploads/1/3/5/2/135298692/1981532.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/bupaxomu/how_much_is_darren_criss_worth.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/bluetooth_app_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/how_to_operate_masterbuilt_electric_smoker.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/50420131589.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/hypertensive_emergency_guidelines_jnc.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/gazatomemudanido.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_off0000e19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE19C 5444 bytes
SHA-256: d564e005a1224405bb8829ae17dd0aa55d4db016010c94adc6590dcb4c153cb0
font_01_sfnt_off0000f3fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FC 10824 bytes
SHA-256: 705aafe6a5e0f54c29a05620726a9d11f76e68a34dceb38891504d47adcd28d5

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