Malicious PDF — malware analysis report

Static analysis result for SHA-256 014fc9b3443ac5ab…

MALICIOUS

PDF

77.6 KB Created: 2021-03-24 06:48:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3bcf5eee21c318de7754bdd47d2c7a6d SHA-1: df037229b7f574202bfadc29520b485542db7090 SHA-256: 014fc9b3443ac5ab692ad2bf009e2a0c92fa085a940c2048870404817c0d2e5f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. 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 0.9990

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://golowaki.ru/strik?utm_term=sandisk+8gb+clip+jam+mp3+player+blue PDF link annotation
    • http://mutujejeturuduf.medianewsonline.com/foxoxogobawatasovamovir.pdfIn PDF document text
    • http://coins24h.com/71692135126zx741.pdfIn PDF document text
    • http://tonagruz.ru/sword_of_truth_meme_template4yt6i.pdfIn PDF document text
    • http://com-signto6.xyz/malayalam_movies_app_2019y2dvy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416143/normal_5fcbf47d778d9.pdfIn PDF document text
    • http://reabook.online/jiponulunipauaxm0.pdfIn PDF document text
    • http://tevfikyuce.xyz/fibrosis_kistik_adalahkiv3k.pdfIn PDF document text
    • http://rulabepotinujeb.mypressonline.com/47370303566.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366031/normal_5fdd15bc8cde6.pdfIn PDF document text
    • https://tuwunujanopir.weebly.com/uploads/1/3/4/6/134617400/fepereke_divori.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418369/normal_604f24f1aaece.pdfIn PDF document text
    • http://jikusofare.mywebcommunity.org/ranco_fridge_thermostat_adjustment.pdfIn PDF document text
    • http://select-get.top/anti_cheat_cs_1._64u8td.pdfIn PDF document text
    • https://lotureze.weebly.com/uploads/1/3/1/3/131379444/0c24776fb.pdfIn PDF document text
    • https://jevokave.weebly.com/uploads/1/3/4/2/134266272/muxikaxexavot.pdfIn PDF document text
    • http://macsk.space/75697551351fh2s5.pdfIn PDF document text
    • http://pe50off.info/small_scale_business_in_nigeria_2020qwz5s.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://jeborawaleko.atwebpages.com/how_do_i_update_my_tomtom_xxl_gps_for_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3689582-b7c6-438d-a53e-dd0500c235b3/3_major_types_of_subsurface_mining.pdfIn PDF document text
    • http://samesesodore.onlinewebshop.net/wave_equation_exercises.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ad65724-0415-48e6-8f00-d7cd19100d6d/samsung_clp-325w_troubleshooting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff55dfa9-1be5-445f-997d-3e83b1a2f1dd/excelsior_en_francais.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bbd7420-f04d-49b0-875c-8cbe5c41658e/what_are_the_seven_habits_of_a_highly_effective_teenager.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d62a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD62A 5928 bytes
SHA-256: 283cfda604307f7e8a344789c576427a90065057f48cc565904e06d68bec1341
font_01_sfnt_off0000ea23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA23 14632 bytes
SHA-256: acee1877ae1be90ad14f4a72c3d511c221d3f0d742125a0044af597d61612ce0
font_02_sfnt_off00011804.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11804 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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