Malicious PDF — malware analysis report

Static analysis result for SHA-256 62724cd8b6904c9f…

MALICIOUS

PDF

80.6 KB Created: 2021-03-27 12:11:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84c0afb8cff7c027337a1abed1ed43b8 SHA-1: 1250977455310c8d12c819ddf95cc83664355283 SHA-256: 62724cd8b6904c9fc4c07386557d06ab47aa07771607771b4d201a8f0f1df0c2
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and the ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to product reviews, likely intended to trick users into clicking the malicious link. No scripts were extracted, but the presence of external URIs and the high confidence detections suggest it functions as a phishing or malware delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://ponafet.ru/strik?utm_term=bradley+original+xlt+6+rack+smoker+reviews
    • https://manabuvajej.weebly.com/uploads/1/3/4/8/134847277/mibegomoso-podafusego-fuzosupixumoze-wagejezidok.pdf
    • https://static.s123-cdn-static.com/uploads/4366964/normal_60085101a5728.pdf
    • https://tusigidufamem.weebly.com/uploads/1/3/5/3/135350313/zorabi.pdf
    • https://cdn-cms.f-static.net/uploads/4476782/normal_604b1974d5e1a.pdf
    • https://rixulajo.weebly.com/uploads/1/3/4/5/134585814/volobarege_damixot_dobasabamizaso.pdf
    • http://glossywp.online/buwelalawufidesusueniwm.pdf
    • https://static.s123-cdn-static.com/uploads/4486033/normal_6005310f01de8.pdf
    • http://daimontimur.org/badisizogibarab0cl.pdf
    • https://static.s123-cdn-static.com/uploads/4407810/normal_5ffb56128090b.pdf
    • https://bibokesoxi.weebly.com/uploads/1/3/4/8/134850131/15532.pdf
    • https://cdn-cms.f-static.net/uploads/4417033/normal_6019c5670f631.pdf
    • https://static.s123-cdn-static.com/uploads/4528959/normal_5ff1dd49bffed.pdf
    • https://static.s123-cdn-static.com/uploads/4480591/normal_5fcef4b1cf5ec.pdf
    • https://jevokave.weebly.com/uploads/1/3/4/2/134266272/7167168.pdf
    • http://yyyyyyhhhhh.space/72394654341nir46.pdf
    • https://dusonibegoxat.weebly.com/uploads/1/3/1/3/131380688/kowovovabew.pdf
    • https://cdn-cms.f-static.net/uploads/4461201/normal_6055312960be9.pdf
    • http://hytri.com/theme_of_sight_and_blindness_in_oedipus_the_king1v0m5.pdf
    • https://cdn-cms.f-static.net/uploads/4496378/normal_5fd2d1a47a94a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2f1b08b8-f590-4b69-881a-eeedcce9b0be/foxawapen.pdf
    • https://uploads.strikinglycdn.com/files/04b13b21-5498-4fcf-a72f-fa6b76a7cc77/section_quiz_chapter_3-3_amending_the_constitution_answers.pdf
    • https://uploads.strikinglycdn.com/files/1cf88bed-a933-4595-8870-35e345647b62/what_is_human_geography_ks1.pdf
    • https://uploads.strikinglycdn.com/files/c6a53915-64b6-470a-9963-569f29ff8b11/14904266454.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fada.bin
34f5628454033940a5966635268c68ba750e93dff6b9ed8fc1ddd256e3434af2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFADA 5848 bytes
font_01_sfnt_off00010ed0.bin
ced9fef16771e98ff4592b7b63baa01bdb9599191760840c6393760c9fd2a7cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10ED0 11364 bytes

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