Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba0da947d03f67ff…

MALICIOUS

PDF

79.8 KB Created: 2021-04-02 05:48:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 6388236760b5b7231296a6b9115cdcff SHA-1: 5e7b746d9851738266fbda09d145be65d7016d0b SHA-256: ba0da947d03f67ff7d7e9b57ab8461a67c29b4a21c14df1467641f9bd1d53fd1
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary suspicious URL pointing to a site that appears to be a phishing lure disguised as a worksheet answer key. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or credential harvesting. No scripts were extracted, but the PDF structure and embedded links are indicative of a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=heredity+review+worksheet+answers PDF link annotation
    • http://raifaisentgo.online/46150899761b22yi.pdfIn PDF document text
    • http://newberginvestmentproperty.com/barejutatejozi8agmz.pdfIn PDF document text
    • http://awpmode.com/how_to_reset_a_furnace_lockoutph7nn.pdfIn PDF document text
    • http://zoluwofemofuper.sportsontheweb.net/28733727929.pdfIn PDF document text
    • http://nosatines.mypressonline.com/grammar_subject_verb_agreement.pdfIn PDF document text
    • http://pixidilivutep.medianewsonline.com/french_texts_for_beginners.pdfIn PDF document text
    • http://tidirakozodawon.getenjoyment.net/dadovuluwititu.pdfIn PDF document text
    • http://thedefenseforge.com/2014_mazda_3_skyactiv_owners_manuale4pjv.pdfIn PDF document text
    • http://gagitevanonuti.mywebcommunity.org/xuwam.pdfIn PDF document text
    • http://sagedix.medianewsonline.com/quran_16_lines.pdfIn PDF document text
    • http://prizinsta.info/what_does_partner_wod_mean_on_apple_watchuewd1.pdfIn PDF document text
    • http://tebogekememesij.mygamesonline.org/who_is_boxer_in_animal_farm_in_real_life.pdfIn PDF document text
    • http://kitukotobov.medianewsonline.com/ramaget.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b27cc42-a023-4785-b845-b790a7d29e56/mcgraw_hill_my_math_grade_3_chapter_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7df35f88-8fda-4e89-b530-9f9de340407b/android_app_development_with_kotlin_tutorial.pdfIn PDF document text
    • http://manuwakagekewu.onlinewebshop.net/78934536573.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7e17fe9-80bc-461d-a66a-e3c77431a482/dir_655_speed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f609e3b0-57ab-4d65-b9b2-e1c5f2941f23/pto_treasurer_report_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/954de8e3-e333-4683-b5a9-43142c62fc29/stunt_scooter_repairs_near_me.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B2 5160 bytes
SHA-256: 6b73fbbfbf6e7cf2056b66bbedd41c7cb3e479bd8c40107e6f1629561dac78d4
font_01_sfnt_off0000f651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF651 11544 bytes
SHA-256: 4e87c4093f8790aacbcb94da7576bd1844b1883304bfb5a136f187ad47b347e4
font_02_sfnt_off00011d10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D10 16068 bytes
SHA-256: 9e1271d681207e96fe60c94df920a27091a957dc81e2614e9e6235263a34fce6

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