Malicious PDF — malware analysis report

Static analysis result for SHA-256 627296ca30209d50…

MALICIOUS

PDF

81.6 KB Created: 2020-12-20 00:24:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 94f946a1235f1735e17047f201a2024e SHA-1: 21daa0b2f83c2662c91efb634ceeab59798dc86d SHA-256: 627296ca30209d50998aa253f853fa4c50f1f35aa16adf2044163b8eea814c7c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified by ClamAV and a machine learning classifier as malicious. The document body, though heavily obfuscated, suggests a lure related to a 'motion activated sprinkler for cats' to entice users to click the malicious link. No scripts were extracted, but the presence of the malicious URL and the high confidence detection scores indicate a phishing attempt.

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://trafftec.ru/strik?utm_term=motion+activated+sprinkler+for+cats PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379720/normal_5fa3e9282af26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381997/normal_5fb95fc9e176e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414682/normal_5fb305a7c1cce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448724/normal_5fd7af39633ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409095/normal_5f99048ecca60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444095/normal_5fa66fc093352.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406191/normal_5fac610e7174a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372354/normal_5f9e4348379fe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf6e89d79364840542339/1606285033607/trd_shift_knob_corolla.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/817d9d32-b5f4-4ac3-b8d2-92b117b804ba/lajefurozowotatevupun.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6836ee9fc3622d5489bf7/t/5fcb2313393ce473562eb554/1607148308395/world_8_ball_pool_rules_poster.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd745bcb0228a2824d01/t/5fc156af5147b14804655beb/1606506159038/mukarazuxeburupiwan.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1e1d18e72e5fdb9faf46/1606295070890/taroviseme.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF554 5068 bytes
SHA-256: 2cc2924a082a02f71478e23051a13f1041bcc385b482e7c8b0cea87e02fb6777
font_01_sfnt_off000106a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A8 10756 bytes
SHA-256: b6a0895e3353514052912bde9e84d4c61ae073c7afce9ce2e9e995eaca548dd7
font_02_sfnt_off00012b35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B35 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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