Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b75e88560b39ac9…

MALICIOUS

PDF

67.9 KB Created: 2020-12-10 21:52:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9aff9a57c4032c9c5aecb93c1cd8acc7 SHA-1: 1d35e80ca860114ff6e2e8d80465bfa8ecc81295 SHA-256: 1b75e88560b39ac964c1fe53fd195cc142b3ad05f36ef64f268c5c36847b9d3d
222 Risk Score

Malware Insights

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

The file is a PDF that contains embedded links, one of which points to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to '24petwatch insurance form' and urgency, aligning with phishing tactics. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or redirecting users to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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://gettraff.ru/aws?utm_term=24petwatch+insurance+form
    • https://fujubonutebi.weebly.com/uploads/1/3/4/2/134266124/7878659.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/86a5b36c-07af-4d91-b908-aa57afac320f/laptop_battery_capacity.pdf
    • https://uploads.strikinglycdn.com/files/ab6cb998-7720-4694-9cfb-45a74939b455/latibi.pdf
    • https://uploads.strikinglycdn.com/files/ef38abf3-7cc0-45ea-b3fe-5328f5f9197c/l_g_van_ng_mch_ch_trileaflet.pdf
    • https://s3.amazonaws.com/ladiwuzetawedi/run_bts_eps_83_sub_indo.pdf
    • https://s3.amazonaws.com/zuses/scope_of_work_template_web_development.pdf
    • https://s3.amazonaws.com/wobuzisibal/7797097897.pdf
    • https://s3.amazonaws.com/felasorarabipis/gunolorukuvigeramifeju.pdf
    • https://uploads.strikinglycdn.com/files/e3b8f9d5-dcdc-4318-89b8-955d7772b642/fund_of_knowledge_mental_status_exam.pdf
    • https://static1.squarespace.com/static/5fc70e0a791da6493f683ef5/t/5fd03aef5ec17a4c668a90c4/1607482100761/86138558148.pdf
    • https://uploads.strikinglycdn.com/files/30f8a37d-8a1a-4297-99e8-e9533a2169d4/rejopuserebovo.pdf
    • https://s3.amazonaws.com/wazotojemov/the_echo_manual_jae_oh.pdf
    • https://s3.amazonaws.com/posufij/ms_sql_server_2016_free.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbb2.bin
d73c081ef8e7fc2582ea3843c79f40f448f95efef126f5fcf2b7f07fecf70b4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBB2 5440 bytes
font_01_sfnt_off0000de22.bin
6cf97337a4cb95250634a6e9d338307469ca04d296d6f1324c507f3ad22aa829		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE22 11460 bytes

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