Malicious PDF — malware analysis report

Static analysis result for SHA-256 89c29cd975cfd0b5…

MALICIOUS

PDF

70.1 KB Created: 2021-02-22 02:47:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: fa77e869b531a349a63ebe33c63f9ef7 SHA-1: 98212248e8d4c4ca7a33f0d459ba5ff32fcc4edb SHA-256: 89c29cd975cfd0b56af242fe7b412fb5568d2af1433a9ed507a0dfa94fbf90a1
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://crophysi.ru/123?utm_term=the+following+stand+by+me+cover+song'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL within the document body suggests a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://crophysi.ru/123?utm_term=the+following+stand+by+me+cover+song In PDF document text
    • https://cdn.sqhk.co/gulijolane/GNLjj7J/photo_video_maker_app_online_play.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421473/normal_6003543f5fc96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413838/normal_5fdb2746c29cb.pdfIn PDF document text
    • https://cdn.sqhk.co/bokirebi/hhLgcja/horizon_fcu_routing_number.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/7PalLLM/fipoduvefaponugijizizo.pdfIn PDF document text
    • https://cdn.sqhk.co/fepogosu/ejdte8v/easy_voice_recorder_apkmonk.pdfIn PDF document text
    • https://cdn.sqhk.co/liwewajawab/QihwEkD/private_caller_67.pdfIn PDF document text
    • https://cdn.sqhk.co/kexofodatop/ngilijV/find_my_friend_android_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385030/normal_601c5d923819f.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/hphddjb/76053912901.pdfIn PDF document text
    • https://cdn.sqhk.co/bagadogod/5Igd2Tw/fun_facts_about_ancient_mesopotamia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393486/normal_60288f7013d5d.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/najubu/sathuranga_vettai_2_full_movie_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/navient_in_school_deferment_form_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/accsys_technologies_plc_annual_report_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/vazusumekasuxup.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/leaked_sat_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/72227750955.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_off0000d307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD307 5780 bytes
SHA-256: 6efa3fbd2b6aa872958de6f8c2813b2b3dde5ffb7d463d257dfec02495367678
font_01_sfnt_off0000e6b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B1 10776 bytes
SHA-256: ad0b561e8f296eb98bf3676088421672cfb460d39dc4422070f5f9315e2034c0

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