Malicious PDF — malware analysis report

Static analysis result for SHA-256 d63aad016aec02c4…

MALICIOUS

PDF

163.1 KB Created: 2021-03-24 18:05:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4ac32bb6ade2adc930b39163a2cab097 SHA-1: 5bd2598be5e310bb96b9b4d5e933c0bf83a018c1 SHA-256: d63aad016aec02c404a8ad3c022d6ccb645ac9a5ccb120a93a45af340a723210
154 Risk Score

Malware Insights

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

The PDF document contains numerous external links and is flagged by ML classifiers and ClamAV as malicious, indicating a phishing or scam attempt. The presence of a 'download button' lure and callback phishing indicators further supports this. Although no scripts were explicitly extracted, the PDF structure and numerous URLs suggest it is designed to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://druttle.ru/wix?keyword=golf+range+gizmo+answers PDF link annotation
    • https://cdn.sqhk.co/wanaxowuwot/hjibYia/wings_financial_routing_number_brooklyn_center.pdfIn PDF document text
    • https://cdn.sqhk.co/bejomewuv/hggdVEC/murder_mystery_2019_dvd.pdfIn PDF document text
    • http://zagavexakagin.mypressonline.com/iupac_nomenclature_of_organic_compounds_examples.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452169/normal_5ff0cfc64a5d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484997/normal_6019980d48aa7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495244/normal_6024ce45ba0ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460975/normal_6006cad0dccc6.pdfIn PDF document text
    • http://fotubobuwenapu.scienceontheweb.net/farojapulawedokivo.pdfIn PDF document text
    • http://bomedimam.22web.org/rezijavamawomiro.pdfIn PDF document text
    • http://gekodejevotug.medianewsonline.com/alelos_multiplos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lapizezevorisi.epizy.com/gepoveruz.pdfIn PDF document text
    • https://836291d8-7b77-40db-be8c-3105928c7ef3.filesusr.com/ugd/aae074_12139d4bb83e42758a12704836dea662.pdf?index=trueIn PDF document text
    • https://a7193630-a032-4ee2-b136-33837135b76a.filesusr.com/ugd/fac845_4cbc6d2af0bf44259d988f4ba72b838a.pdf?index=trueIn PDF document text
    • http://mutaluwuvekigo.rf.gd/xudekuxuvunegumovijune.pdfIn PDF document text
    • https://de2ee6d5-caaa-4265-b15c-40100ab77d99.filesusr.com/ugd/d43733_fcf4dc823d5d41e7b3e13803979d768f.pdf?index=trueIn PDF document text
    • https://411be8f8-4ba1-40b5-9edf-cc4a2c3d5ecc.filesusr.com/ugd/a86d68_06a8120cc00d462d8b0d736ec55eeb98.pdf?index=trueIn PDF document text
    • https://ef5e9b3f-1a8e-4c79-9b60-34b8f8133c96.filesusr.com/ugd/18574e_9bc413fc05dc4beb8d3a11dd7e438530.pdf?index=trueIn PDF document text
    • http://piwakitidi.onlinewebshop.net/the_odyssey_penguin_clothbound_classics.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000215bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x215BC 5036 bytes
SHA-256: 74bcf8c3f473ad007d67c5df070306964a59057762d51284d6402c0ade31d1cc
font_01_sfnt_off00022720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22720 5260 bytes
SHA-256: eed4a94aec9f6811d6f72ff443bb04b66320e5addbaaeed65fb799669b00e2ae
font_02_sfnt_off0002390a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2390A 14116 bytes
SHA-256: ef4502bd5527cffda20f9c5db2dd8d2817e367de4b37f0daed80d85946349bcf
font_03_sfnt_off000267b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x267B1 16172 bytes
SHA-256: d6b22a3af5de17498c24f972fbc9500047da5cf9ea19c32be09581fc76eaa380