Malicious PDF — malware analysis report

Static analysis result for SHA-256 379aea788e6a6f55…

MALICIOUS

PDF

74.4 KB Created: 2021-02-14 23:47:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 58e0261499e199922452acfe38e0f01e SHA-1: 3cb23265a358aba899d3cc77e5e62676e254a334 SHA-256: 379aea788e6a6f55ddf139935c2828c65405676390c890b27b5cd1fbe21f6159
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'crophysi.ru' suggests the document is designed to redirect users to a potentially harmful website. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/wix?keyword=722+phone+area+code PDF link annotation
    • http://momentikshop.space/debating_planning_templatey72bc.pdfIn PDF document text
    • http://tefituguj.iblogger.org/mozamap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381751/normal_5ff71b05e9534.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393893/normal_5fe9badfb752e.pdfIn PDF document text
    • http://3-bureaureport.info/56375767184joouz.pdfIn PDF document text
    • https://cdn.sqhk.co/fakosopalo/gridP1H/real_football_2015_download_java.pdfIn PDF document text
    • https://cdn.sqhk.co/jirowolad/eidsT4S/pottery_making_lessons_near_me.pdfIn PDF document text
    • http://lnstagram-helps-contact.com/70129558332ft5zr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375908/normal_5ffed0e746724.pdfIn PDF document text
    • http://shoes-storie.club/baroque_text_font_freeg1xcq.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/jjijjfA/terraforming_mars_board_game_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/jjjfQic/ifly_gps_review.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/tedowafomaru/jenotavosawigux.pdfIn PDF document text
    • http://wagarimorule.rf.gd/philadelphia_eagles_injury_report_week_12.pdfIn PDF document text
    • http://vumafovixono.rf.gd/mixurevekeduxifofobep.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/53368892789.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/mibobapixitegonisuj.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/aurora_3d_animation_maker_for_android.pdfIn PDF document text
    • http://rekekolulopar.rf.gd/70571365096.pdfIn PDF document text
    • http://bemeridalazobox.epizy.com/81373902144.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_off0000e703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE703 5068 bytes
SHA-256: 0e5424beb2d32ca590d86702f34e35736f3fa32078b3fe52d1a56aedb33ef961
font_01_sfnt_off0000f83f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF83F 10448 bytes
SHA-256: 056623bd41076621faa370b4612c14c1f74c949c9b00d2fbe43f63c476edaf7e

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