Malicious PDF — malware analysis report

Static analysis result for SHA-256 3021602d34a12599…

MALICIOUS

PDF

81.7 KB Created: 2021-03-20 18:44:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f3b7d4e7e472d2acb87d26ea4ac5c75 SHA-1: 700f687d8efb8ac575c849ab03d2397d21579894 SHA-256: 3021602d34a125992614488a4018a258851844b09f3b33f84077a06e808e342a
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, disguised with a seemingly innocuous book series title, suggests a phishing or social engineering lure. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic point towards potential exploitation or redirection to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://botokaw.ru/strik?utm_term=wings+of+fire+series+order+goodreads
    • http://invitesistem.ru/tilugezawh.pdf
    • https://static.s123-cdn-static.com/uploads/4486344/normal_5fc8dbe05a401.pdf
    • https://cdn-cms.f-static.net/uploads/4457281/normal_600e9ffa94ccc.pdf
    • http://itslm.fun/758072493527qm65.pdf
    • https://cdn-cms.f-static.net/uploads/4414672/normal_6021450d55bbb.pdf
    • https://cdn-cms.f-static.net/uploads/4420431/normal_60411fe52b87b.pdf
    • https://cdn-cms.f-static.net/uploads/4374207/normal_60553005d2f65.pdf
    • http://mugedly.xyz/919265253428qob8.pdf
    • http://jeruxawi.iblogger.org/how_to_draw_zentangle_art_for_beginners.pdf
    • http://leopolds.space/my_dell_computer_wont_power_one0qo8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/kisimujuk/63650203427.pdf
    • https://s3.amazonaws.com/metakibeme/mobile_gamepad_apk.pdf
    • https://s3.amazonaws.com/jolozidabi/goduzob.pdf
    • https://uploads.strikinglycdn.com/files/646cea23-af03-4059-8b98-d8727b68596a/7.3_transmission_cooler_swap.pdf
    • https://uploads.strikinglycdn.com/files/9d8270a6-5cdf-4d0d-9b6a-404208e3fa15/zogarepotetoturuvugo.pdf
    • https://s3.amazonaws.com/fuwenoxuzasila/en_bonne_et_due_forme_definition.pdf
    • https://s3.amazonaws.com/xupovobejanam/german_shepherd_puppy_images.pdf
    • http://piterar.epizy.com/46059459840.pdf
    • http://ropanosuge.rf.gd/formato_cdr_como_abrir.pdf
    • https://s3.amazonaws.com/pulavokaxe/puledufogolan.pdf
    • https://s3.amazonaws.com/supefujoxopubu/20815693559.pdf
    • https://uploads.strikinglycdn.com/files/fc95f9fa-297d-46e5-855f-bb0a15980e07/govivipise.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f707.bin
7adf2c4e5247f19e28ae4bfb49093eac8b6e6ac17c72316a71816872cfd8fc04		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF707 4764 bytes
font_01_sfnt_off00010743.bin
d685c95b373f5917917a45e4920b229f269a1050860f33f88831398b8548250b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10743 10592 bytes
font_02_sfnt_off00012b48.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B48 4324 bytes

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