Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fa94ec67c06ed29…

MALICIOUS

PDF

80.6 KB Created: 2021-03-25 00:46:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18c45d4f69fc73ddded8bf9741c2589d SHA-1: 1601d413ffcc0e518472a83649c7b1aac0b7addc SHA-256: 4fa94ec67c06ed29eb956370c3230ea266034d583e47780951620eea299fd938
156 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ClamAV and an ML classifier. It contains a large number of external links, with the primary one being to a URL that appears to be part of a link farm. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external URLs suggest an attempt to redirect the user to potentially malicious websites or to manipulate search engine results.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=types+of+beverage+glasses
    • https://fofomobagukewe.weebly.com/uploads/1/3/4/3/134352826/daked.pdf
    • http://zugugalepew.mypressonline.com/1605157297.pdf
    • https://putifunefam.weebly.com/uploads/1/3/0/7/130775131/sanapedekata.pdf
    • http://novazeku.mygamesonline.org/62285193073.pdf
    • https://sepuvomaxobaba.weebly.com/uploads/1/3/5/3/135311468/644515a.pdf
    • https://zurukonovode.weebly.com/uploads/1/3/1/3/131379219/5334007.pdf
    • http://paxezimusosesa.scienceontheweb.net/9818487613.pdf
    • https://xowiwive.weebly.com/uploads/1/3/1/3/131398234/4938965.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/donake/call_of_duty_release_date_2019_android.pdf
    • https://113c517c-d7b0-4b36-99d7-6722bcb7ef36.filesusr.com/ugd/8e66a5_6cb8c34ee0934b25920115a776d3709f.pdf?index=true
    • http://jajogagek.atwebpages.com/anatomy_of_liver_and_biliary_system.pdf
    • http://welavozolin.rf.gd/angulo_de_cobb.pdf
    • https://s3.amazonaws.com/bezegoluzose/kemuk.pdf
    • http://wedizakur.epizy.com/dm_vasudevan_biochemistry.pdf
    • https://147762ec-90f0-4523-8579-43cb3cd17c82.filesusr.com/ugd/6c48b9_a3ca57bd5fea4655a48233437a6fe27c.pdf?index=true
    • https://s3.amazonaws.com/nowokil/77918923405.pdf
    • http://relumewamamit.rf.gd/writing_practice_worksheets_for_1st_grade.pdf
    • http://vajavilodufolix.epizy.com/fuzoratisiwos.pdf
    • http://xofogijatoli.epizy.com/tubexuwisaxajeketixo.pdf
    • https://s3.amazonaws.com/widiku/dead_and_gone_lyrics_drama.pdf
    • https://a146b927-ed54-472d-b3a8-6b137e313b92.filesusr.com/ugd/4d400c_079738b85d8044eea8c80dc18d7bcc3f.pdf?index=true
    • https://a815f367-2516-4b88-9496-eed07d5c1eb7.filesusr.com/ugd/665c20_8e4ae42641ad4ceb8f0d2016fbeccc9e.pdf?index=true
    • http://palomidifigur.epizy.com/vojelaf.pdf
    • https://s3.amazonaws.com/guwutivupudutu/passato_prossimo_o_imperfetto_esercizi.pdf
    • http://dolipefutulej.epizy.com/akshara_song_badhai_ho_badhai.pdf
    • https://ddb1515c-011f-4d6c-9a6c-b305a2039a85.filesusr.com/ugd/477ac5_9c586136bb9e4dbcbff6f871f961c75b.pdf?index=true
    • 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_off0000f09c.bin
38761db34eb91b5ec2213bff4d7df871e948d63a1bb05bfcae65b85508dd16cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF09C 4872 bytes
font_01_sfnt_off0001014d.bin
db8d61424e447f34346ef3b3e57e7a68be373ee5875393a498b086e9102a40dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1014D 10976 bytes
font_02_sfnt_off0001268f.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1268F 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.