Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f70ea7bf1f80eae…

MALICIOUS

PDF

89.0 KB Created: 2021-03-01 07:06:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 1d33fef3dc807a09bb0c9029e4711729 SHA-1: 2362ee8a3c5113fb817aaf51443181c256d44230 SHA-256: 0f70ea7bf1f80eae60627f3e3f1552ef07e305d095d60b77d70d8e55c0749138
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection as a phishing trojan. The document body and embedded URLs suggest a lure to download further malicious content, likely by disguising itself as a search result. The presence of numerous external links, many on disposable domains, reinforces the phishing and link-farming nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/wb?keyword=108%20lakshmi%20ashtothram%20lyrics%20in%20english%20pdf PDF link annotation
    • http://testrun.ru/sokopasuzedibavoze63ypk.pdfIn PDF document text
    • http://gachihyper.xyz/paragenegizofinirilarzsyw1.pdfIn PDF document text
    • https://cdn.sqhk.co/rilowikapaz/ACbjhhf/juxavobizedise.pdfIn PDF document text
    • http://woxuruko.medianewsonline.com/93947993881.pdfIn PDF document text
    • http://euromarket.pro/cch_i_ui_sang_word_2020hb06h.pdfIn PDF document text
    • http://pawezujexas.mywebcommunity.org/the_columbia_anthology_of_modern_chinese_literature_download.pdfIn PDF document text
    • http://websporizle4.com/jobubedinksqok.pdfIn PDF document text
    • https://cdn.sqhk.co/gobisurav/l5jj5Ww/86959849511.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388432/normal_603494458c7ac.pdfIn PDF document text
    • http://creditreportusa.info/lorut5jlrl.pdfIn PDF document text
    • http://tusiteguluvora.getenjoyment.net/2001_jeep_grand_cherokee_limited_owners_manual.pdfIn PDF document text
    • http://ideaita.fun/teaching_english_grammar_scrivener_download7s8kc.pdfIn PDF document text
    • http://bluebadgeform.com/pogepezitiwitadagexobabuf5tomf.pdfIn PDF document text
    • http://select-get.top/rokoligisegiwmhxj.pdfIn PDF document text
    • https://cdn.sqhk.co/libegavezu/1AAUtZl/puruxowatukerurumadu.pdfIn PDF document text
    • http://laura-egorova.ru/56862916468mdtfo.pdfIn PDF document text
    • https://cdn.sqhk.co/kixowijeka/hkyQhgn/choices_stories_you_play_queen_b_walkthrough.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn 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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE699 2948 bytes
SHA-256: ce96b12e9915ae00788165bdc898c8313e64b942c5fb2cd6e51536d4bdd2f265
font_01_sfnt_off0000f11e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF11E 6028 bytes
SHA-256: 021fe9bb56cfa876d0de3a92407e640147a96c706754fcab343d2c0f0456d167
font_02_sfnt_off0001058b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1058B 3720 bytes
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed
font_03_sfnt_off000110ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110EE 12664 bytes
SHA-256: 035fa7819a50bc5d6ede695604c1f4678f16791fe596e1785b9dc833d6346edc
font_04_sfnt_off00013783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13783 9108 bytes
SHA-256: e7a9bbaa8e45780597711a1f3874457ec318f6d517931d483276e208e0e1644a

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