Malicious PDF — malware analysis report

Static analysis result for SHA-256 515cc2cb9d65baea…

MALICIOUS

PDF

89.1 KB Created: 2021-04-08 03:05:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 4b6e9d269060e05ac1129db1e8031637 SHA-1: 9029adcfa5e709bec768457244f13129c0076ce0 SHA-256: 515cc2cb9d65baea408dc263573cfe95d63b1cca772c48db9e8a9a3dfb1289c0
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are part of a link farm designed to manipulate search engine results. The document body is heavily obfuscated, but the presence of external URIs and the PDF_SEO_LINK_FARM heuristic indicate a likely intent to redirect users to potentially malicious or spammy websites. ClamAV also detected this file as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 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.
  • 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://maypoin.ru/wix?keyword=hisense+tv+40h3e+manual PDF link annotation
    • http://xezawavebavulem.iblogger.org/bocio_toxico_nodular.pdfIn PDF document text
    • https://rofexigu.weebly.com/uploads/1/3/0/7/130738805/d7c03.pdfIn PDF document text
    • https://fefojaza.weebly.com/uploads/1/3/4/4/134480993/2586547.pdfIn PDF document text
    • http://2220202.ru/importance_of_being_earnest_character_quotesi0plr.pdfIn PDF document text
    • https://wuzetawitowozuz.weebly.com/uploads/1/3/1/3/131381497/notosofezaru-podoxuwakab-bizenus.pdfIn PDF document text
    • http://prodson.fun/formula_car_racing_mod_apk_unlimited_moneyc8j6a.pdfIn PDF document text
    • https://gazonigupeti.weebly.com/uploads/1/3/4/8/134879892/19d9a211b92b.pdfIn PDF document text
    • http://raifaisentapp.online/how_do_i_sync_my_logitech_wireless_keyboard_with_a_different_receiver91nql.pdfIn PDF document text
    • http://instapriz.online/samsung_ubd-k8500_best_pricefdmxq.pdfIn PDF document text
    • https://foxidaxoluw.weebly.com/uploads/1/3/4/0/134016742/27ccb2.pdfIn PDF document text
    • https://dudixugodibemuf.weebly.com/uploads/1/3/1/4/131406925/xosejinubanonip.pdfIn PDF document text
    • https://jifefovemerozix.weebly.com/uploads/1/3/4/4/134444698/bapifafobovetiw_panatazakimubet_defej_xavopubumu.pdfIn PDF document text
    • https://boloxekovo.weebly.com/uploads/1/3/2/6/132681585/jamuna_revofo.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/waduzirader/is_kindle_app_or_ibooks_better.pdfIn PDF document text
    • http://koxowasone.epizy.com/daily_grammar_practice_8th_grade_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/vtech_cs6709_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/26421654842.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/movies_free_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/mizevuratajilegelinipejug.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/82390568800.pdfIn PDF document text
    • http://zetafonetupusef.epizy.com/96325075462.pdfIn PDF document text
    • http://piruxogijuba.rf.gd/biworekowow.pdfIn PDF document text
    • http://bifobexa.rf.gd/dante_purgatorio_canto_xi_parafrasi.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_off00011a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A46 5244 bytes
SHA-256: d5724a3ace3ec7127944049f925aa6f8a640d15c2114d30221fff439cdbe19b7
font_01_sfnt_off00012bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BFE 12896 bytes
SHA-256: 41228e83e514efc0594841a091a3801a348a9cce5d8d6a77d7cc6abdffc4e5c9

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