Malicious PDF — malware analysis report

Static analysis result for SHA-256 b32e960f61aa9b67…

MALICIOUS

PDF

77.7 KB Created: 2021-03-09 17:27:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ff949a20c73bbc9e0a4da178e2604c3e SHA-1: 17d9b28519f488d7efa7e17550dde7df425f19c1 SHA-256: b32e960f61aa9b67e36992e2115b751faf8c3f9fdeb36be282bc6c8d63f7b3ce
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. 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 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/award?keyword=factors+affecting+bioavailability+pdf PDF link annotation
    • https://cdn.sqhk.co/zuronenom/idjrnBb/7_ancient_wonders_of_the_world_2018.pdfIn PDF document text
    • https://ziwagunu.weebly.com/uploads/1/3/4/8/134883986/suzasegidinoz.pdfIn PDF document text
    • https://felinabaf.weebly.com/uploads/1/3/4/3/134380667/7c9b2bbb.pdfIn PDF document text
    • http://vipodesin.22web.org/baghini_bengali_movie_song.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwadezab/ge87Dfa/save_the_president_daughter_2.pdfIn PDF document text
    • https://dixamagajo.weebly.com/uploads/1/3/4/6/134652312/nuzepebedomonofigazu.pdfIn PDF document text
    • https://cdn.sqhk.co/tinulafi/ihjjOMW/christmas_table_runner_for_square_table.pdfIn PDF document text
    • https://cdn.sqhk.co/fomolunuvufa/ghcjiic/77541570214.pdfIn PDF document text
    • https://cdn.sqhk.co/lexikegije/j0eoheh/sonnys_place_mini_golf.pdfIn PDF document text
    • http://dogosufomume.iblogger.org/diff_checker_software.pdfIn PDF document text
    • https://ropumalopiku.weebly.com/uploads/1/3/4/6/134613257/jekegufuxarumu-zuvej-zajiwapajukix-vorakinarip.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/gotitibekovi/21741086240.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/imperial_and_metric_conversion_worksheets.pdfIn PDF document text
    • http://pibunowawoxi.epizy.com/giwujomipodamarexefadibaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd2bf706-2b7e-472c-93dd-6cd493f1551c/how_to_test_continuity_with_a_analog_multimeter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03102ae1-030c-42db-97af-f6fbf19a314f/68735385423.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a63563a3-73b1-49ac-9a28-0b454b06eaeb/23967572189.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/gawifetokuxifeno.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/15831257892.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/058c6a47-51b4-45ea-9dd7-b34603411cab/21335075278.pdfIn PDF document text
    • http://rixuzomobe.epizy.com/choose_v3_form.pdfIn PDF document text
    • http://dadonugila.rf.gd/89317977660.pdfIn PDF document text
    • http://pasexojubil.epizy.com/epistar_5630_smd_led_datasheet.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_off0000f2df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DF 5580 bytes
SHA-256: c92d1e53261753ef0cf0918a038e8fae4d0a538b90c2fdc8e6e5fd561ab38c2c
font_01_sfnt_off000105f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F1 10348 bytes
SHA-256: 82d6573087c72238d2b48e61ee89a73afcb15a52f183d640bb9477edf68040fa

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