Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8844e5cccd6c622…

MALICIOUS

PDF

74.9 KB Created: 2021-03-19 22:39:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 5a5d42a728c63714fd8e244b4a947b7f SHA-1: 056a1d9e7e1be3de3a9249f725cd762c48dff54c SHA-256: a8844e5cccd6c622edc4c2f2d76bd74d4bb5858cca8a53ad314fd3e406c0e2d5
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains numerous embedded URLs, with one prominent URL leading to a site offering a 'Fortnite week 5 challenges season 4 guide', suggesting a lure to a phishing or malware distribution site. The presence of embedded URLs and the nature of the content indicate an attempt to trick users into visiting a malicious external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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 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://dugedepap.ru/123?utm_term=fortnite+week+5+challenges+season+4+guide PDF link annotation
    • http://salonlabs.xyz/63557866956jz00d.pdfIn PDF document text
    • https://sevafigetof.weebly.com/uploads/1/3/4/9/134902911/lekobofatud.pdfIn PDF document text
    • http://scoretdho.best/foucault_governmentality_and_critiquek7stk.pdfIn PDF document text
    • http://extrameets.fun/muwebizudexivn72e0.pdfIn PDF document text
    • http://starkrobotics.org/dan_brown_books_the_da_vinci_codey6ar9.pdfIn PDF document text
    • http://soul-felt.com/fledgling_octavia_butler_summaryl994z.pdfIn PDF document text
    • https://ranibifuvif.weebly.com/uploads/1/3/1/3/131381542/3445370.pdfIn PDF document text
    • https://wukelefitifaka.weebly.com/uploads/1/3/4/8/134882985/9741bf0d12d.pdfIn PDF document text
    • http://svoytrylend.xyz/calligraphy_fonts_for_mac_freesythg.pdfIn PDF document text
    • http://shoes-storie.club/is_onix_good_pokemonpsaad.pdfIn PDF document text
    • http://mon-cmbretagne.com/feelings_faces_cards7kmzv.pdfIn PDF document text
    • https://bafexobis.weebly.com/uploads/1/3/4/0/134041027/ecda87061aa0.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/08c80078-c6a2-48d8-af77-d90450730e81/tevitapiturepixipaxunig.pdfIn PDF document text
    • http://netubufetolanup.rf.gd/blackjack_game_no.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9e16f09-77c0-4ef3-a4f3-52576f7ad635/giwevoxizefuwisiguvofet.pdfIn PDF document text
    • http://kutidonufeguvuz.rf.gd/93136138854.pdfIn PDF document text
    • http://wulemarodexik.rf.gd/arqueologia_industrial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0354a01-40c5-4a6c-ad85-b0ec0e86d663/68960852210.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/crockett_livestock_market_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/wanurolijiril.pdfIn PDF document text
    • http://metowovukijipu.rf.gd/tipos_de_cavidades_dentales.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d4b6c69-8acb-4ac8-a42e-aeb628d6b624/best_project_management_book_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/528432eb-cd16-4c13-829c-04c21ce33b68/fonetezunepotuwunoselum.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_off0000e79f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79F 5524 bytes
SHA-256: 19a5b8181aeeeacce90185801eb93f9afeef0993a82151942832e38a09d91439
font_01_sfnt_off0000fa82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA82 10460 bytes
SHA-256: 299a668c9ad1161d4c3276c409373b320ac30d250d269df3034e048908ecc0b7

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