Malicious PDF — malware analysis report

Static analysis result for SHA-256 323df08c7cb6121b…

MALICIOUS

PDF

98.8 KB Created: 2021-03-09 06:54:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 11f001b2ac4ae664ec26970d6f430692 SHA-1: e6fb33d8f945d17fd75edc9ea26d76b778065a9f SHA-256: 323df08c7cb6121b71bdd5f0a5e6ac1adb1e0bedf4040c32ac957e25f1e2f6ee
150 Risk Score

Malware Insights

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

The PDF contains multiple external URIs and is flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan distribution attempt. The document body, though malformed, suggests a lure related to 'building planning and drawing pdf download', combined with urgency and payment-related language. The presence of numerous links on disposable hosting further supports a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 8

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://lozipotod.ru/award?keyword=building+planning+and+drawing+pdf+download PDF link annotation
    • https://cdn.sqhk.co/woxekivepi/EghajdH/kivoxegosi.pdfIn PDF document text
    • https://cdn.sqhk.co/kigimole/e2LVpJC/iowa_storm_map.pdfIn PDF document text
    • https://dapasubasawesol.weebly.com/uploads/1/3/4/3/134383907/momamemuzumoz.pdfIn PDF document text
    • https://wadabugijiri.weebly.com/uploads/1/3/0/8/130873870/834bffbf5ef676.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/eggkgab/1973_amc_models.pdfIn PDF document text
    • https://maladekokox.weebly.com/uploads/1/3/4/7/134745457/7651127.pdfIn PDF document text
    • https://xigujevaw.weebly.com/uploads/1/3/4/7/134701692/a6c6a20f21b.pdfIn PDF document text
    • http://zakiwejila.iblogger.org/ziratodowezaloxuzakur.pdfIn PDF document text
    • https://vefarekosisag.weebly.com/uploads/1/3/4/7/134722728/38a080cd9c79e.pdfIn PDF document text
    • https://kalogipewaga.weebly.com/uploads/1/3/4/5/134595512/mojiwidiganegozoz.pdfIn PDF document text
    • https://cdn.sqhk.co/dojaxeje/hcUBbiw/instagram_captions_for_fall_selfies.pdfIn PDF document text
    • https://dazenesulamese.weebly.com/uploads/1/3/1/1/131164173/tikusekabod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kutalawupabewu.rf.gd/price_of_casio_g_shock_watches_in_india.pdfIn PDF document text
    • http://fixadamobus.epizy.com/rent_stabilized_lease_renewal_form.pdfIn PDF document text
    • http://beverotunege.epizy.com/60759788879.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/operation_research_books_by_s.chand.pdfIn PDF document text
    • http://gizadopozi.epizy.com/ms_access_embed_report_in_email.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/how_to_restring_a_zebco_reel.pdfIn PDF document text
    • http://rebopugosive.rf.gd/casarse_pronto_y_mal_larra.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/how_to_rappel_off_a_tree.pdfIn PDF document text
    • http://xapimiwosusuv.epizy.com/43101598738.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_off00014724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14724 5172 bytes
SHA-256: 3eb202cb01c3d087a25a81c5e2427fd791045c2b08e1d8e0d2fe1392d13ab922
font_01_sfnt_off000158e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158E9 10884 bytes
SHA-256: f7e6c5b5d324a117bac34f6cfcc6ceb87572ac0f8d59c4792a6da66c8e891037