Malicious PDF — malware analysis report

Static analysis result for SHA-256 55bd76a1ec0e99f5…

MALICIOUS

PDF

77.3 KB Created: 2021-04-06 20:16:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69d2aa30abfdfb8b34e00a93e52e9092 SHA-1: 6e2d4125bbb6815b4db8357676f39edc71a07f13 SHA-256: 55bd76a1ec0e99f5e6593ee6d2f5350051d6ed07a4ebb306fc58f469f9792803
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing campaigns. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to lure users to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://pelibifir.ru/strik?utm_term=chick+fil+a+honey+roasted+bbq+sauce+calories
    • http://molotkov.site/ikigai_book_free_downloadrxy2u.pdf
    • http://ru-payment.casa/xotopacszpz.pdf
    • https://cdn-cms.f-static.net/uploads/4464700/normal_60683039eee70.pdf
    • http://roselosudeve.sportsontheweb.net/simile_and_metaphor_exercises.pdf
    • https://cdn-cms.f-static.net/uploads/4391015/normal_60502989809f7.pdf
    • http://zdorovie-vashe-vse.xyz/place_value_chart_example_grade_2uyw0e.pdf
    • http://leoidet.xyz/consumer_reports_most_reliable_car_brands_2010rqkju.pdf
    • http://falorilipeb.mywebcommunity.org/call_letter_for_interview_sample.pdf
    • https://cdn-cms.f-static.net/uploads/4379626/normal_5fd2e00020922.pdf
    • https://static.s123-cdn-static.com/uploads/4465262/normal_60039e41b6d45.pdf
    • http://rebibedo.mywebcommunity.org/familazalolebenorutege.pdf
    • https://cdn-cms.f-static.net/uploads/4411696/normal_602c64e9f3962.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://33fe1336-4051-433c-b691-b763732126dd.filesusr.com/ugd/6c8f37_28aa305aca324f2f86d4ee15b416b077.pdf?index=true
    • http://kapowuxivi.atwebpages.com/capriotti_s_catering_menu.pdf
    • https://7f1158f2-e44e-4cac-991a-806210d1dc3e.filesusr.com/ugd/e4a8e1_dd16993445d74328983e8bb06f3e8b81.pdf?index=true
    • https://0f7a2101-273c-4f7f-b1fd-079d1ad923c1.filesusr.com/ugd/a7ea6f_4f513de509a04b99ac467dcedd680b8b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/46fa9e4c-1f70-4a39-8b22-b9c060d1c4c0/the_little_book_of_common_sense_investing_chapter_summaries.pdf
    • https://uploads.strikinglycdn.com/files/330e1e44-0cbd-405a-aa4b-ed2ed54e6b3b/2746387216.pdf
    • https://459ec6dd-5b69-4322-a182-74abbfaa0e48.filesusr.com/ugd/221eaa_6d4ffb0744a34eafae00c5b44110422d.pdf?index=true
    • http://nuwadolonopip.onlinewebshop.net/sanewepelu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef5b.bin
7fcf929c33217e083821651cc0689ab6c849f40d51577a17c2a47f78ed4b7c59		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF5B 5444 bytes
font_01_sfnt_off000101de.bin
29636ed6d08b3cfb231e42571eb97ab174baca97359f15598610af36b64aa83e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101DE 11168 bytes

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