Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a95ee5a7c9c375d…

MALICIOUS

PDF

93.1 KB Created: 2021-03-16 02:59:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ad213a961263a5078f0926d22bf419bd SHA-1: 290e754091ea091660bc5af4e0d070b99f5c24e7 SHA-256: 8a95ee5a7c9c375d5ba133a8cff976d913d3c45620b7c5a16d6d5c8ca333545a
146 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://jacksth.ru/strik?utm_term=infinix+note+9+price+in+bangladesh+2020 PDF link annotation
    • http://basofeveku.iblogger.org/arrow_game_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424953/normal_5ff49ce95c3a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484093/normal_60107c0136701.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454161/normal_60319a1723d80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500679/normal_5fde5f7f99be6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481671/normal_603c69dec6f42.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
    • https://uploads.strikinglycdn.com/files/14345109-5d56-4833-821f-98d92c9cab22/88193771813.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/90860530105.pdfIn PDF document text
    • http://nipixexit.rf.gd/active_and_passive_voice_worksheet_grade_7.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/2000_to_2019_bollywood_movies.pdfIn PDF document text
    • https://7c3dd69e-6649-485e-b385-36acc2971cd6.filesusr.com/ugd/cf9ff1_ad9d5c975de1493a91626e47003bdca5.pdf?index=trueIn PDF document text
    • https://34570882-574e-4d25-8c0e-d8b9b6c2967f.filesusr.com/ugd/cb2bed_ff9282b678f74e65b1ea4314e1c2cfee.pdf?index=trueIn PDF document text
    • http://dukifubu.epizy.com/brady_tls_pc_link_printer_driver.pdfIn PDF document text
    • http://xivubijorudi.epizy.com/46161744964.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3138c52-ab07-423f-b95a-e359a67fa26a/examples_of_descriptive_text_structure_passages.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/ascendas-_singbridge_launches_india_logistics_platform.pdfIn PDF document text
    • http://rigitusavogu.epizy.com/16443634881.pdfIn PDF document text
    • http://xumepamef.rf.gd/before_sunrise_movie.pdfIn PDF document text
    • https://0e098354-e5d1-4afc-9be7-763a70ae5e44.filesusr.com/ugd/ef253e_c548f126f8a043d1aa43e9895e0d317f.pdf?index=trueIn PDF document text
    • http://lemutuzuvaw.rf.gd/didazojorenijow.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D8 5780 bytes
SHA-256: 4b6b9eeb9af2f2dcea81b04878d20ccfb3241e4d6da5c522d05b5b6de0eb014d
font_01_sfnt_off00010771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10771 3852 bytes
SHA-256: bec7a4ef2b6abc0f8b4d5cd61dcb85e73abff0d238454ecaed4d8568c9b8f0d0
font_02_sfnt_off00011371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11371 11428 bytes
SHA-256: d81bb3a98f49cd8cc07c1d7ead993fb79c709044fed6fcef673d6cf6f0023838
font_03_sfnt_off00013a8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A8B 18048 bytes
SHA-256: 1077803fd8c407f7bf569f8490220e52145748f8b30585a15ab07ae1261d549a
font_04_sfnt_off0001563e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1563E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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