Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2cb91f0ab3105f9…

MALICIOUS

PDF

74.8 KB Created: 2021-03-15 11:34:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 90a1e458ac90447136e5c46e7922e130 SHA-1: 9b4d9c57e7bb61072cd2c9c54195df8a35ad5e51 SHA-256: e2cb91f0ab3105f92c2dfee3c9bef5dc1e530a33a4dfa6d2f6116b1da54fca7f
166 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains links to algorithmically-generated URLs hosted on disposable domains, a common tactic for distributing malware or phishing content. The document body, though heavily obfuscated, suggests it is masquerading as a legitimate PDF, likely to trick users into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://ponafet.ru/123?utm_term=primer+of+adlerian+psychology+pdf PDF link annotation
    • https://cdn.sqhk.co/lafixafif/jfZUiac/jixumetofuxidukujebudujez.pdfIn PDF document text
    • https://cdn.sqhk.co/javufikari/JBhdghC/pinkfong_and_baby_shark_s_space_adventure_g.pdfIn PDF document text
    • https://cdn.sqhk.co/pasovevutuvi/jjehg1I/xividilunagodarutoba.pdfIn PDF document text
    • http://privateguardingserviceagainstdanger.site/ripovebooimwa.pdfIn PDF document text
    • http://sodaapp.club/ditamemopoxepikugakomezev6su5e.pdfIn PDF document text
    • http://instapriz365.site/html_templates_for_free_downloadsgr7k.pdfIn PDF document text
    • http://expressvpn.store/percy_jackson_e_a_maldio_do_tit_o2gfro.pdfIn PDF document text
    • http://fastgetme.online/a_low_carbohydrate_ketogenic_diet_manual_no_sugar_no_starch_dietqd2j1.pdfIn PDF document text
    • https://cdn.sqhk.co/butemobe/hiaV3jg/pubivirutalexowuz.pdfIn PDF document text
    • http://urott-hu.com/68892246943uz5qm.pdfIn PDF document text
    • http://triple-doska3.club/catacombs_guided_tour_paris7pe01.pdfIn PDF document text
    • http://presentinsta.site/97686144481kn30a.pdfIn PDF document text
    • https://cdn.sqhk.co/lisesemafo/ghiibgc/mabogivebenuloxoxokarazi.pdfIn PDF document text
    • http://vengriya.space/25262282455az82m.pdfIn PDF document text
    • http://nosinoski.shop/chick_fil_a_cobb_salad_calories_no_dressingwygoi.pdfIn PDF document text
    • http://lnstagaram-verifiedbadges-from.com/1783-etap2f_single_modea91dc.pdfIn PDF document text
    • http://sutovuresas.mygamesonline.org/garmin_driveluxe_50lmt-d_test.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://56a7be67-7dca-40da-a973-69ad719fb73b.filesusr.com/ugd/fedf23_0b289d43b336448f8a90e71b2af71e05.pdf?index=trueIn PDF document text
    • https://5e54824a-8208-41b0-8aeb-7c017e8cfb46.filesusr.com/ugd/f64db8_fbf64b2a2ca3497880d3f93aac4572f4.pdf?index=trueIn PDF document text
    • https://5c2cca0d-3a4e-48b0-93bf-8ac6c0c026cb.filesusr.com/ugd/271e65_8b0d01aebf3d480cb76de68cd9e83623.pdf?index=trueIn PDF document text
    • http://fajenadiwizowo.atwebpages.com/geotechnical_engineering_companies_in_bangalore.pdfIn PDF document text
    • https://6bb2b61b-82bf-473b-8365-63ddb02ddbdd.filesusr.com/ugd/d55797_302f19aa644b459fa063e4d64342dd37.pdf?index=trueIn PDF document text
    • https://04a80c79-134c-446e-801b-0c1635678e59.filesusr.com/ugd/5cebf8_2b7defe6d7454fc29382d576388b63ce.pdf?index=trueIn 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_off0000e495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE495 5672 bytes
SHA-256: 49d5229a23119712ee0d6b6af038d5159bc141d25d25226ef16955de446af575
font_01_sfnt_off0000f7bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BF 11052 bytes
SHA-256: 5fe7362a84028ec4c3fb8ebb5840f33210cbd668413931c96085b2f9c4854c93

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