Malicious PDF — malware analysis report

Static analysis result for SHA-256 69ac1a1842b82f43…

MALICIOUS

PDF

73.5 KB Created: 2021-03-23 04:34:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 470b93d2b7cf1262ba56b87ece6fadfe SHA-1: 4dc3185890cd6b2883c46a9b5d0f111b33a094c1 SHA-256: 69ac1a1842b82f435130f9824d6b5b265ec069971297b700991dcf4c01a45a55
126 Risk Score

Malware Insights

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

The PDF contains multiple external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the embedded URLs and heuristic firings point towards the document being used to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://vilenefex.ru/123?utm_term=android+auto+waze+night+mode+not+working PDF link annotation
    • http://christinaanddavid2019.com/lagutesunuzofavipinawuxb48pp.pdfIn PDF document text
    • http://nepatokada.mypressonline.com/88794819022.pdfIn PDF document text
    • http://kigirifaduguv.getenjoyment.net/european_art_history_timeline.pdfIn PDF document text
    • http://gadivawiw.sportsontheweb.net/lokenofozojavewosug.pdfIn PDF document text
    • http://puzexijabin.mypressonline.com/narugatezuvadajopa.pdfIn PDF document text
    • http://bufibinokurun.scienceontheweb.net/what_is_strategic_management_process_explain_with_suitable_examples.pdfIn PDF document text
    • http://setlyb.online/33533122856ishxb.pdfIn PDF document text
    • http://dontbeshy.xyz/batman_arkham_knight_able_content_freev5tnl.pdfIn PDF document text
    • http://qrettalq.online/40_rules_of_love_by_elif_afaksk547.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/vimibewife.pdfIn PDF document text
    • http://julonisajox.rf.gd/85796034882.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/zezunirubasokagem.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/64917306060.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a06944b-5ea0-43c0-9f8a-d94c44b2b560/winters_bone_streaming_vf.pdfIn PDF document text
    • http://ruronegiseko.atwebpages.com/39350629257.pdfIn PDF document text
    • http://wipadafefuxasi.onlinewebshop.net/ramana_maharshi_died_of_cancer.pdfIn PDF document text
    • http://kudovumajumiw.rf.gd/where_is_zojirushi_rice_cooker_made.pdfIn PDF document text
    • http://refiwamidur.rf.gd/where_is_the_learn_code_button_on_genie_pro_98.pdfIn PDF document text
    • http://lirolisol.epizy.com/92911514101.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/middle_names_for_liam_yahoo_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9b0e216-3fba-4529-8ad7-1a815cb307ef/tizorafijovobovaxona.pdfIn PDF document text
    • http://newubopuga.epizy.com/java_eclipse_ide_for_windows_7.pdfIn PDF document text
    • http://pizuzol.onlinewebshop.net/70553704348.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EB 5224 bytes
SHA-256: 1509625b0e170bf814ad88901a1d89006ae67c9533da7541c89fe9fd09fb640e
font_01_sfnt_off0000f49d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF49D 10444 bytes
SHA-256: ea4954fed937b657a67f77f97375e0f226781fa039378ffa9f92dae0e770ba32

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