Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e45752a0a5f2e79…

MALICIOUS

PDF

88.3 KB Created: 2021-05-12 01:03:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 3f992305299b63e4cdb2e1cc1f780b61 SHA-1: bf06f64a11002d3e9784f814e549e201cb5de142 SHA-256: 7e45752a0a5f2e79b22b6a3fa746a1e63edd1a0f61982745ca7b221e4493106c
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including brand-impersonation credential phishing and a machine learning model. The document contains numerous external URIs, many pointing to disposable hosting and redirectors, which are commonly used in phishing campaigns. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing attempt, likely leveraging embedded JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://jofomozali.weebly.com/uploads/1/3/5/3/135387403/foxojabubisire.pdf.
  • 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://resalured.ru/strik?utm_term=project+management+software+tools+free PDF link annotation
    • https://jofomozali.weebly.com/uploads/1/3/5/3/135387403/foxojabubisire.pdfIn PDF document text
    • http://tufuwavaziga.mygamesonline.org/84423853289.pdfIn PDF document text
    • https://tudogaxutu.weebly.com/uploads/1/3/5/2/135295125/7083566.pdfIn PDF document text
    • http://fbdirect.site/percy_jackson_and_the_olympians_the_lightning_thief_reviewqthqy.pdfIn PDF document text
    • https://juromavunux.weebly.com/uploads/1/3/0/7/130776553/c4826d7395250.pdfIn PDF document text
    • https://nozusetemakofam.weebly.com/uploads/1/3/1/4/131408546/d46d1ae.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • https://femuketidoxesi.weebly.com/uploads/1/3/3/9/133997502/daboj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://leparitupoxow.onlinewebshop.net/budget_proposal_sample.pdfIn PDF document text
    • http://pedirite.onlinewebshop.net/why_is_my_epson_xp_320_not_printing.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/nakofaxetexexadaniketak.pdfIn PDF document text
    • https://18e99e0c-7034-4a8c-9069-267580a295b8.filesusr.com/ugd/b337f5_6418deaacf7b4a12ae772a58a97fc490.pdf?index=trueIn PDF document text
    • http://kazupisejurig.rf.gd/50103107664.pdfIn PDF document text
    • http://vefodipox.myartsonline.com/what_is_yo-yo_dieting.pdfIn PDF document text
    • http://fafebexa.epizy.com/gangster_land_2017_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/what_does_the_wps_button_do_on_router.pdfIn PDF document text
    • http://xuneviwek.epizy.com/kabbalah_magic_in_urdu.pdfIn PDF document text
    • https://8ab8d0a6-ebcf-4503-ac90-3c5d9a0926ce.filesusr.com/ugd/8585d4_fdcd83e6ab0b4ed1a57a62363cb2188e.pdf?index=trueIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f77b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF77B 3044 bytes
SHA-256: 0a4b5c31f4257e5a2707017370dcf829c84058060820f6748bf1d2aeb2c81f0e
font_01_sfnt_off0001024f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1024F 5372 bytes
SHA-256: 45fbcd7fb199cb5c2216cb8759237f2c0ad531a3d04a1882a3efce02e4e7c002
font_02_sfnt_off00011494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11494 11712 bytes
SHA-256: cd6f7dbf694aeb2671b2410336ad68ada5e415c6fd89a960bc85f1dfe40f63c9
font_03_sfnt_off00013cc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CC8 16072 bytes
SHA-256: ddedb84bd1e8a54b9f54678af270270befc79532f6c6f54dc4a61cbb1f9bc02a