Malicious PDF — malware analysis report

Static analysis result for SHA-256 201b5329e460b0ef…

MALICIOUS

PDF

91.7 KB Created: 2021-02-25 01:52:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6b34239556a4360f6e3df0917ef339a4 SHA-1: 9bec12a8530b0a20acc17a075956a2187bcbfb57 SHA-256: 201b5329e460b0ef4ef0c3a8ed3de6e2f3ee2e8f11f7f12b828c94f05f8dbe39
186 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a phishing scam. The document body is heavily stuffed with links to various domains, suggesting an attempt to poison search engine results or redirect users to malicious sites. The heuristic 'SE_TRAVEL_SUPPORT_PHONE_SCAM' indicates a potential pretext for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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/strik?utm_term=what+is+the+plot+of+maze+runner+2 PDF link annotation
    • http://taxevidel.medianewsonline.com/bokawadilatusu.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/55727874147.pdfIn PDF document text
    • http://fazejajogavu.medianewsonline.com/sugabumugakowileloli.pdfIn PDF document text
    • http://zikewexer.scienceontheweb.net/apc_smt1500nc_smart-ups_1500va_lcd_120v_with_network_card.pdfIn PDF document text
    • http://prostotit.site/gobawewuttiif.pdfIn PDF document text
    • http://pefiworawodud.mypressonline.com/xogimilaruxiriwipusobo.pdfIn PDF document text
    • http://jinevul.mygamesonline.org/29248609131.pdfIn PDF document text
    • http://terugate.mypressonline.com/18463618936.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/12279141070.pdfIn PDF document text
    • http://wifunagidoli.mypressonline.com/how_to_use_hamilton_beach_digital_steamer.pdfIn PDF document text
    • http://sipataj.sportsontheweb.net/44397680972.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/remington_700_bdl_30_06_synthetic_stock_for_sale.pdfIn PDF document text
    • http://wellwork.site/91781459633dsr0n.pdfIn PDF document text
    • http://punejew.mygamesonline.org/super_mario_land_3_wario_land_cheats_gameboy.pdfIn PDF document text
    • http://kukushka.space/vegudimuxogipajhyy3t.pdfIn PDF document text
    • http://devlp.club/tilumanobamawoxowatuxigom5u99u.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00011444.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00011444.bin)
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn extracted file (font_01_sfnt_off0001264a.bin)
    • http://smc.org.inhttp://smc.org.inIn extracted file (font_01_sfnt_off0001264a.bin)
    • http://sutexuvidag.myartsonline.com/how_long_to_read_the_handmaids_tale.pdfIn PDF document text
    • http://nukilaba.myartsonline.com/95904717967.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/57413766852.pdfIn PDF document text
    • http://tiluxusimutine.atwebpages.com/seven_years_old_song_mp3.pdfIn PDF document text
    • http://zotubune.myartsonline.com/metupuxinoguredanatobixez.pdfIn PDF document text
    • http://diwavubodinaroj.myartsonline.com/best_smart_board_for_classroom_in_india.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 extracted file (font_00_sfnt_off00011444.bin)
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn extracted file (font_01_sfnt_off0001264a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11444 5336 bytes
SHA-256: 345b906f7c2231733269c0000200f38b61634ccff9d81fa2fa1ed2e185f1067d
font_01_sfnt_off0001264a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1264A 4368 bytes
SHA-256: bba03dbb6b00222e31a3896d4a5974c8a23a87619842b730b14a40e8f86793b3
font_02_sfnt_off000136e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136E3 12064 bytes
SHA-256: b5ac8152a38afc005760feeb10e195e3b2fb040b9545d11bb8ad596e61dff243