Malicious PDF — malware analysis report

Static analysis result for SHA-256 5592da4cee22a988…

MALICIOUS

PDF

86.9 KB Created: 2021-03-13 23:42:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d259367295e7c70f623fa1a8455a3e90 SHA-1: b0988d5edaf8cb56a1c013fc068d704f7fc434a0 SHA-256: 5592da4cee22a9887f73f42d2aa9ac5e8a8192fcc4821ddb0c4c6075b7e9ea01
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF document's body text, though heavily obfuscated, suggests a lure related to academic proposals. It contains a large number of embedded URLs, many pointing to disposable domains and link farms, which is characteristic of phishing or malware distribution schemes. The presence of external URIs and the overall structure suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/award?keyword=proposal+skripsi+pendidikan+agama+islam+pdf PDF link annotation
    • http://wemorewabadeluz.mygamesonline.org/51624086194.pdfIn PDF document text
    • https://gikesusemu.weebly.com/uploads/1/3/4/7/134775173/burazebodajoke.pdfIn PDF document text
    • https://valezofijamope.weebly.com/uploads/1/3/4/4/134445284/3ee1410.pdfIn PDF document text
    • https://cdn.sqhk.co/modonasuje/ohiidif/scoop_it_up_minute_to_win_it_rules.pdfIn PDF document text
    • https://simokatojerosu.weebly.com/uploads/1/3/0/8/130874490/femovi-dulezogabivumud-jogobogapazesa.pdfIn PDF document text
    • https://jipofaxinevafud.weebly.com/uploads/1/3/4/3/134350183/cbd8f41ad.pdfIn PDF document text
    • http://sakivometo.medianewsonline.com/kebapukavavifodepego.pdfIn PDF document text
    • https://jefilixepiras.weebly.com/uploads/1/3/2/6/132681342/8c76648e8c3.pdfIn PDF document text
    • https://wogizirimabote.weebly.com/uploads/1/3/5/3/135337148/bupozoz.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/eBNidGN/can_you_escape_6_level_30.pdfIn PDF document text
    • https://togezajotutev.weebly.com/uploads/1/3/0/8/130874352/4230381.pdfIn PDF document text
    • https://cdn.sqhk.co/gunonutib/WgexjdZ/cartoon_network_apple_and_onion_competition.pdfIn PDF document text
    • https://fokomawirofuteb.weebly.com/uploads/1/3/0/9/130969657/xiwiwaxodikoju.pdfIn PDF document text
    • https://cdn.sqhk.co/pasepizut/ZjcoZgf/human_fall_flat_all_levels_2020.pdfIn PDF document text
    • http://rulabepotinujeb.mypressonline.com/38509345441.pdfIn PDF document text
    • http://bumosid.getenjoyment.net/42706633205.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd599282-15c4-41c3-a264-cd68171c8f67/94814312750.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3cb540c-f556-441a-a8a6-2e58002591b7/63395828282.pdfIn PDF document text
    • http://nisetekotixob.myartsonline.com/31755771564.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c58d4122-9486-4cb4-976c-2a1fb14c074d/26251587129.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_off000115a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115A9 5428 bytes
SHA-256: ca35bd4fb0370289c646fccc20061462c5e9273020efba6468768fd19aa0cf59
font_01_sfnt_off00012808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12808 11196 bytes
SHA-256: 6bc48fcae506182ec3ca3838006af87f2826379e7528ad10546816f81b17aab4

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