Malicious PDF — malware analysis report

Static analysis result for SHA-256 785e420ec33eb97a…

MALICIOUS

PDF

76.0 KB Created: 2021-03-03 21:50:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 1c81c733ad29eafd25d6f3024adc50a7 SHA-1: b68bca794333c4c1796edb3f8302976778a727dc SHA-256: 785e420ec33eb97a050bf30e8c33e4970101cceba6647cee0807ed05902a42a6
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is disguised as a search result for "john deere mower deck wheels". The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://yafferge.ru/award?keyword=john+deere+mower+deck+wheels In PDF document text
    • http://folugomobok.getenjoyment.net/perrines_literature_book_12th_edition.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/hi9bdhf/semevonunivaxuzoz.pdfIn PDF document text
    • http://kavelokafozi.medianewsonline.com/hp_4630_printer_not_printing.pdfIn PDF document text
    • https://palarijebatexo.weebly.com/uploads/1/3/4/3/134338538/bibesaluxu.pdfIn PDF document text
    • https://cdn.sqhk.co/saboxiwago/iK2enhc/gizidoxajixesi.pdfIn PDF document text
    • https://sinukofulav.weebly.com/uploads/1/3/4/6/134634738/kejudoke.pdfIn PDF document text
    • http://wegoluxetas.scienceontheweb.net/94843848670.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503791/normal_5fe6b496962ed.pdfIn PDF document text
    • http://nigavereke.mygamesonline.org/fejojanitok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388177/normal_600040402633d.pdfIn PDF document text
    • https://peniseguj.weebly.com/uploads/1/3/2/7/132712198/ed4623c9695120.pdfIn PDF document text
    • https://cdn.sqhk.co/wojipezusax/egc8cib/college_basketball_coach_rosters.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gixarewujedel.atwebpages.com/leon_uris_exodus_film_deutsch.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/seruduz.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/best_griddle_for_glass_top_stove.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/how_to_clean_wii_remote_straps.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/latopewekajoxulilokadi.pdfIn PDF document text
    • http://sipanokule.onlinewebshop.net/60526139725.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_off0000ee0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0A 5112 bytes
SHA-256: d38ba2d61c3c8f81c24aeadb232ebc71adccb75fd6ff3eee60de0c4050d076ff
font_01_sfnt_off0000ff54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF54 10476 bytes
SHA-256: 961fa26922786adc0ff97bc21681f8840d2460dd407a89cc3ddba596d110fefb

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