Malicious PDF — malware analysis report

Static analysis result for SHA-256 8524d725b15ee882…

MALICIOUS

PDF

68.1 KB Created: 2021-02-17 07:47:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 03903c7bfbad79ce29adcaa97f85f34c SHA-1: e92fc612f5a22eabcc1f7eb3cb196d1e870923e1 SHA-256: 8524d725b15ee882114855be84b8400828748974aae1f4beabb775e15730e256
194 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a link farm designed to redirect users to various external sites. The document body, though heavily obfuscated, contains a query about resetting a Whirlpool ice maker, suggesting a lure to attract clicks. The presence of numerous external links, many hosted on disposable domains, indicates a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://jottigo.ru/123?utm_term=how+do+you+reset+a+whirlpool+ice+maker PDF link annotation
    • http://trychambre.xyz/vertical_and_horizontal_communication7hm79.pdfIn PDF document text
    • https://jejipabiximi.weebly.com/uploads/1/3/2/7/132741556/3991979.pdfIn PDF document text
    • http://3203epworthcres.com/how_to_install_cycleops_thru_axle_adapter14caf.pdfIn PDF document text
    • http://qiwi-wallet.online/alphabet_hbreu_bibliquer4c45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463287/normal_6016ed269fdd3.pdfIn PDF document text
    • http://esagafow.fun/omega_ruby_rom_downloadmk6x5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448550/normal_5ff9ea84c6d5e.pdfIn PDF document text
    • http://feyakast.online/battle_cats_cat_food_hackdwvtk.pdfIn PDF document text
    • http://prostochillforum.fun/zomigi5dhqd.pdfIn PDF document text
    • https://dozunetad.weebly.com/uploads/1/3/4/4/134472758/rafufefisazigubawen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457839/normal_5fd81fc2182b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491925/normal_602a8f1b4d638.pdfIn PDF document text
    • http://ecoterritory.store/lagelejinibmy3e6.pdfIn PDF document text
    • https://josapepukixo.weebly.com/uploads/1/3/1/3/131384602/4880547.pdfIn PDF document text
    • http://price-list.moscow/core_connections_integrated_3_answerk1cbu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469631/normal_60150e6845155.pdfIn PDF document text
    • http://ourfutures.space/59483368155txi5v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463298/normal_6016c1ae3bf43.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cf86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF86 5532 bytes
SHA-256: 1d4c35a9024c99b86d7eaae7e0e6e9b8d09b3d073bf8855afd4e1c84d0871035
font_01_sfnt_off0000e23d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23D 9708 bytes
SHA-256: f9a310ce38d37fdd164c362882d47e4ceec578660ce956dee584f4d46bcac538

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