Malicious PDF — malware analysis report

Static analysis result for SHA-256 575e39ef8cb0ccbf…

MALICIOUS

PDF

127.9 KB Created: 2021-03-31 00:18:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f7d52a4fc7ccc8029344aeffa71e40e5 SHA-1: f8c5ae854ca54030ad07b3dcafd6b63ea14fe557 SHA-256: 575e39ef8cb0ccbfa0423e52753c92744002ed675c0f5ecec9f651610f49ed54
66 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 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 0.9992

Heuristics 4

  • 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://crophysi.ru/wix?keyword=swtor+marauder+vernichtung+guide+6.0 PDF link annotation
    • http://molatidov.22web.org/84618395081.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373243/normal_60403b9c5801a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383586/normal_604e550c6f13d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409813/normal_6034c84d7a779.pdfIn PDF document text
    • http://fresh-ita.space/9720857540o0f4k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405206/normal_60066591c6aae.pdfIn PDF document text
    • https://cdn.sqhk.co/zixemoliz/fhdX0ig/bitabuxisewaxolowumuvalar.pdfIn PDF document text
    • http://pevurupijovuzut.22web.org/arqueologia_do_saber.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381534/normal_5fca6b82a8e82.pdfIn PDF document text
    • http://timecodes.net/143927627216zy6v.pdfIn PDF document text
    • http://stylecurtains.com/lujejexazixu8z9gm.pdfIn PDF document text
    • https://cdn.sqhk.co/latusetime/ibNKoyQ/35189564659.pdfIn PDF document text
    • http://info-pages.ru/pistola_llama_380_especialkq862.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wupafar.rf.gd/jekagelavasavunubeponu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/085faf68-ed77-41af-9139-6673491d6a14/zifupokokavorewevuxa.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/89743121209.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/jerifoteviz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dacddbf-5d7a-4946-9ed7-263d440fea3e/advantage_of_rankine_cycle.pdfIn PDF document text
    • http://lezixabomikurot.epizy.com/kupuxikuxez.pdfIn PDF document text
    • http://xevorerokune.epizy.com/eclipse_36_honing_guide_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/peroxutegovuse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1873c581-4e56-433b-ad3b-2f03e26ba296/pokmon_ultra_sun_and_moon_switch.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/xotetutivafotu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c650d18a-d4c5-4faa-8139-0e50e7ddc506/weil_mclain_ultra_error_code_e-36.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/vibip.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19F3D 5728 bytes
SHA-256: 36b40a125b81a47f377846c264f3229e978715c3831cd8768bb91f69cace6e15
font_01_sfnt_off0001b2af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B2AF 12008 bytes
SHA-256: 446916a7f1265a5a030c67846e0e9f823d71a08ee37ef38c5a9f944ba9a27c1c
font_02_sfnt_off0001dbe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DBE6 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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