Malicious PDF — malware analysis report

Static analysis result for SHA-256 00738803eecb008f…

MALICIOUS

PDF

73.0 KB Created: 2020-12-28 06:20:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: bb1b07aecc7cd8f6b7827b5506c1be49 SHA-1: 05c095789d7703edce1b622dd811136dfe75161c SHA-256: 00738803eecb008f1a116ddcb39649c997474868c10bd042b18ed5a200b14136
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL, https://traffking.ru/aws?utm_term=boutonniere+deformity+in+rheumatoid+arthritis, is the primary indicator of malicious intent, likely serving as a lure for phishing or to download a secondary payload. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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://traffking.ru/aws?utm_term=boutonniere+deformity+in+rheumatoid+arthritis In PDF document text
    • https://cdn.sqhk.co/feneradebeza/eJhcift/gamefly_ps5_games.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414849/normal_5fb5ca150a6dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421937/normal_5fd8fdd161fa1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410714/normal_5fbdc30339514.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367296/normal_5f89e57abec57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371266/normal_5fc257439e884.pdfIn PDF document text
    • https://cdn.sqhk.co/xurunesijud/eifTieh/xcom_enemy_within_tactical_rigging.pdfIn PDF document text
    • https://cdn.sqhk.co/guletema/midjiIt/20469121148.pdfIn PDF document text
    • https://cdn.sqhk.co/jedetanepiz/hblmig8/space_force_logo_netflix.pdfIn PDF document text
    • https://cdn.sqhk.co/nezusoxe/eW50jan/vavuratirogixapetusolarop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416150/normal_5fd12a14e6e8c.pdfIn PDF document text
    • https://cdn.sqhk.co/vawikepaf/RJpVLnZ/66073488296.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://uploads.strikinglycdn.com/files/1619b574-a858-43a6-810f-4bc92bf3c927/tom_of_finland_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1eb3f8dd-dd54-4fc8-885e-54b43edf34e6/56919335280.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a28835ca-ad72-4e4f-ae5a-a75e691d20b0/halfway_down_the_stairs_family_guy.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_off0000d467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD467 5148 bytes
SHA-256: 357aeeb9f7ffcff4130f23ab2fdd8c88c9e56374985ea70ef4d09bef6400ece5
font_01_sfnt_off0000e5bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BB 10196 bytes
SHA-256: 159cd35b1c49ae79306eda9dd585375741e31c91df2eb729d012c94309ab0431
font_02_sfnt_off000108b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108B0 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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