Malicious PDF — malware analysis report

Static analysis result for SHA-256 28e01309875372d0…

MALICIOUS

PDF

80.6 KB Created: 2021-02-06 17:28:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b891f56cf6011f16086ae9d4f36ad872 SHA-1: e9c44e470980d8892354539655604f6c2f5162ca SHA-256: 28e01309875372d0e564388087968f6c712c67c5f6c062a4b629d0d63022e88e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to 'https://crophysi.ru/aws?utm_term=calma+remix+song++djjohal', which is a strong indicator of a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful content.

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
  • 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/aws?utm_term=calma+remix+song++djjohal PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4452193/normal_5ffa56d36c3b9.pdfIn PDF document text
    • http://chelobaka.space/noxowaw2973.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376598/normal_6001364238b8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412174/normal_5fe2791f3b4e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489414/normal_601d36de147e3.pdfIn PDF document text
    • https://cdn.sqhk.co/pobumepova/gQnhcgd/kungfu_action_movies_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/niiwagd/wyze_discount_code_nov_2020.pdfIn PDF document text
    • http://cardioactiveitalia.site/shield_logo_ai_template5u5km.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485161/normal_5ff553501011b.pdfIn PDF document text
    • http://wivafojoki.22web.org/kerala_baby_boy_names_hindu.pdfIn PDF document text
    • http://teachersaid.fun/idle_gun_3dvr38s.pdfIn PDF document text
    • http://reduslim-officialsite.site/92707133914ftaz9.pdfIn PDF document text
    • http://hr-insider.com/vowatedowixomuroxpiulo.pdfIn PDF document text
    • http://1yamal.space/the_lottery_short_story_analysis_worllq9l.pdfIn PDF document text
    • http://obschee.xyz/820793576603ln2r.pdfIn PDF document text
    • http://bandalet.club/kefutazivudilawasumitejongbi8f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bisubop.epizy.com/civ_5_steam_guide.pdfIn PDF document text
    • http://tukozadagafewan.rf.gd/setisefafujakasoded.pdfIn PDF document text
    • http://butadiviwev.rf.gd/62162722574.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF610 5288 bytes
SHA-256: aa950cab73f7176060d72bbea60bd1420cc6cf3c2784d10a82ad4260ef74ba45
font_01_sfnt_off000107e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107E4 14512 bytes
SHA-256: c998054896e6dfe7e40b2fae33a29eedf56240de70741e534051caf6be4d248b

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