Malicious PDF — malware analysis report

Static analysis result for SHA-256 9295eaa95ff0f144…

MALICIOUS

PDF

80.8 KB Created: 2021-02-19 03:54:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 96cbfcbdd774c4a9e1dbb6cdb170abfa SHA-1: ab3506f3ae600a50bc37023fc57c07d9c3e83067 SHA-256: 9295eaa95ff0f14484feec81501c16f58684d7d3881d6fe43540b3f19d8b9950
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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/wix?keyword=foam+concrete+blocks In PDF document text
    • https://cdn.sqhk.co/melipetoluf/hODGhii/29591007189.pdfIn PDF document text
    • https://cdn.sqhk.co/potiribuwuf/eiggbij/78080037099.pdfIn PDF document text
    • http://barbanapoli.moscow/tuvogizikagivol5r.pdfIn PDF document text
    • https://cdn.sqhk.co/zaviresodew/Agd5hi0/classic_piano_tunes.pdfIn PDF document text
    • http://usacreditmonitoring.info/spread_spectrum_bookiwfkj.pdfIn PDF document text
    • https://cdn.sqhk.co/gevajoke/hchgeoV/idle_weed_tycoon_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/botonerepap/j4ZvgFX/birthday_cake_party_pics.pdfIn PDF document text
    • http://fruitslope.online/freundlich_adsorption_isotherm_equationkctsl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366351/normal_601a797109dc9.pdfIn PDF document text
    • https://cdn.sqhk.co/limexofure/SnggAAf/59211607782.pdfIn PDF document text
    • http://totalcreditreport.info/define_propositional_knowledge_tokfgkp2.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/hb7hahc/dragon_mania_legends_all_dragons.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381751/normal_6018d3ffd7fec.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/jevelel/absolutely_anything_movie_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/18011621723.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/ditukazes.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/barron_s_ielts_latest_edition_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/teatv_ad_free_apk_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/kubedukowug/93991677460.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCD 5104 bytes
SHA-256: e24d75b6e1e6952a3312d46e357ab46adb058f2eea76ee09f67a7350d6448210
font_01_sfnt_off0000fd15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD15 10532 bytes
SHA-256: c13b9daa9caa8f6ff0fe3f38e9a2170f2a4d7945ffaeb384f91682da8b4ef4ff
font_02_sfnt_off0001211d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1211D 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3

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