Malicious PDF — malware analysis report

Static analysis result for SHA-256 eadbfa1ad776e30a…

MALICIOUS

PDF

74.5 KB Created: 2021-04-14 21:55:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a904950a25f388fe604f792a77b6b11c SHA-1: 2ff444d413b7e61f5fe6d5b78d7c4e64d28efd08 SHA-256: eadbfa1ad776e30a21ca761400220c180382ab4ae57f0068d09d07f9165139a1
176 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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.
  • 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://resalured.ru/strik?utm_term=ups+apc+bx500ci+back+ups+500va%252F300w PDF link annotation
    • https://cdn.sqhk.co/mewivupa/jjfhchc/supa_strikas_dash_shakes_edition.pdfIn PDF document text
    • http://albl.ru/personajes_primarios_y_secundarios_de_la_obra_metamorfosis2ul7f.pdfIn PDF document text
    • https://veminimuvaw.weebly.com/uploads/1/3/4/6/134630651/befebuj.pdfIn PDF document text
    • http://moneyindia.site/sharp_cv-2p10sx_parts93da9.pdfIn PDF document text
    • http://pesale.pro/226969267598utkc.pdfIn PDF document text
    • http://ruszaimclub.ru/commercial_electric_tester_ms8903h_battery_replacementwm6e9.pdfIn PDF document text
    • https://jazasamiwuri.weebly.com/uploads/1/3/4/8/134889091/pulutowiforeburaved.pdfIn PDF document text
    • https://cdn.sqhk.co/tekuligote/hbKhjx5/360ed_universe_learning_platform.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/bewibiwat/the_filmmakers_handbook_fourth_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/xigilizegegexesezuwas.pdfIn PDF document text
    • https://2a07c75e-e898-48ba-b326-4cccc82d0599.filesusr.com/ugd/ff154e_467f2d423c0542c8892ab7d13e1b5444.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wetevali/71321466725.pdfIn PDF document text
    • https://b4140449-9b96-4148-8619-c9b3eed7b48c.filesusr.com/ugd/c33cdb_921fce3657a54b0eaa7d7e4816b89d21.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/estudio_cardiologico_de_framingham.pdfIn PDF document text
    • https://d1b33a7b-cde1-45d4-bc15-d4d3b6236ac5.filesusr.com/ugd/1d64af_0b5092a170944324a7e7c971d73446fc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/cechy_podzielnoci_liczb_sprawdzian_klasa_4.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/zivejolisalumumav.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/textbook_of_physiology_ak_jain_free_download.pdfIn PDF document text
    • https://2d66045e-c276-4037-81df-184b25840e97.filesusr.com/ugd/cdf3e3_46280a108bcf46ce8635225fdf8d2bdf.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE214 5680 bytes
SHA-256: e7d3f2e3c33c3ac41be0c6253aeee16e345ecb0efcb9a24e970f77a0da4c1d9f
font_01_sfnt_off0000f5aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5AA 12284 bytes
SHA-256: 63aa7fe79db0d74f3846b062e7203f13508fd60d2aecadc31465784deffd2d62

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