Malicious PDF — malware analysis report

Static analysis result for SHA-256 aab02a94aaca3f6e…

MALICIOUS

PDF

84.1 KB Created: 2021-03-20 15:20:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 83aefc5dfd1dc073f3984d76d087f703 SHA-1: 259a119cfc3bde3cc7d768abe80e25513219880d SHA-256: aab02a94aaca3f6ed0b13dd1cd81f75da5706432a82cb71040717df6f91c2e8e
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting, which are likely used to host or redirect to malicious content. The document body, though heavily obfuscated, suggests a lure for downloading a 'free book', aligning with phishing or scam tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://soxebez.ru/award?keyword=descargar+paraiso+travel+libro+pdf+gratis PDF link annotation
    • https://cdn.sqhk.co/lojosexotak/hgjvhbb/14022236113.pdfIn PDF document text
    • http://jujovobima.getenjoyment.net/47870933988.pdfIn PDF document text
    • http://kudezixajuxuni.66ghz.com/89344301610.pdfIn PDF document text
    • http://wevoselaxoto.66ghz.com/dragon_balls_game_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409238/normal_6001d5c85d756.pdfIn PDF document text
    • https://cdn.sqhk.co/sebazisop/duibusX/knot_to_attach_rope_to_pole.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421218/normal_5fed47f56b70d.pdfIn PDF document text
    • https://cdn.sqhk.co/fasisela/ghfiduI/wipitokuneduloxosuru.pdfIn PDF document text
    • https://cdn.sqhk.co/womilepeba/dwafTI2/dual_survival_matt_graham_net_worth.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446633/normal_603b7b108c07b.pdfIn PDF document text
    • https://cdn.sqhk.co/tirabipati/iacvhu3/local_guides_connect_l_g.pdfIn PDF document text
    • http://tinubawolu.mywebcommunity.org/69562009245.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499283/normal_5fd105a5e59c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501229/normal_5fda173a694a7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://tonavisuma.onlinewebshop.net/bebidas_carbonatadas.pdfIn PDF document text
    • http://januxak.rf.gd/vshare_for_ios_7.pdfIn PDF document text
    • http://zufavubop.rf.gd/carceles_de_mujeres_en_mexico.pdfIn PDF document text
    • http://somepezepu.epizy.com/risc_vs_cisc_architecture.pdfIn PDF document text
    • http://sugexure.rf.gd/butterfly_sitting_on_flower_images.pdfIn PDF document text
    • http://lakiver.epizy.com/16332410518.pdfIn PDF document text
    • http://futebowa.atwebpages.com/cscmp_supply_chain_management_process_standards.pdfIn PDF document text
    • http://mixafipu.rf.gd/jeju_olle_trail_12.pdfIn PDF document text
    • http://wumekupewug.rf.gd/canon_600d_manual.pdfIn PDF document text
    • http://gerekuvuburase.epizy.com/3102220647.pdfIn PDF document text
    • http://ruxogofirovudux.epizy.com/74867752515.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF338 5204 bytes
SHA-256: f2d3f5050ab83e4978884eef6e53738b7808604852f7686a2999583a9f6cf6d7
font_01_sfnt_off00010504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10504 10800 bytes
SHA-256: 5de59e01d9a97747db25b21c0997a5bcfca7317502e4be615e84e7f6ac200fac
font_02_sfnt_off000129d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129D8 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
font_03_sfnt_off000137d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137D8 2456 bytes
SHA-256: c22cdcdcef857412c508a85ff0e9daca888007d809467e938c3babb1278cd1df