Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d297474117970f9…

MALICIOUS

PDF

78.1 KB Created: 2021-03-28 18:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 238128a1ec370dd3ee08f99fada465ce SHA-1: b494210069d804d29666471634ac9fb3e5f7e577 SHA-256: 2d297474117970f95f469c2aaf8e08cdcab32ace970ac764646afab21fc5ebec
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The sample is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, with a primary focus on redirecting users to 'fokemale.ru'. This suggests a phishing or scam campaign where the document serves as a lure to a malicious site. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://fokemale.ru/strik?utm_term=3+beasts+in+inferno PDF link annotation
    • http://metoxegid.mygamesonline.org/sql_injection_cheat_sheet_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413458/normal_603244699c889.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459329/normal_6051ce6243a03.pdfIn PDF document text
    • http://murimubijejaba.mygamesonline.org/juvuvodezidipax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377931/normal_6056ab98ee5e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388037/normal_60255457e5212.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388596/normal_604d449a55595.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zotuxegusam.epizy.com/honeywell_chronotherm_4_thermostat_manual.pdfIn PDF document text
    • https://b01cffea-7a05-49e8-9781-04202a21c04b.filesusr.com/ugd/d5d855_fb74bf4b6041487090637930d20a23b3.pdf?index=trueIn PDF document text
    • https://df256b98-640c-444d-885a-8195c7360722.filesusr.com/ugd/40b9e6_8cee52864d15440a8add8bb5df2c3076.pdf?index=trueIn PDF document text
    • http://fepetixapokurob.myartsonline.com/zowafimipukifoderenuki.pdfIn PDF document text
    • http://zapopododo.rf.gd/kipikuwa.pdfIn PDF document text
    • http://xakurukedafa.epizy.com/70259919809.pdfIn PDF document text
    • http://batawovajupofu.rf.gd/gastropoda_mangrove.pdfIn PDF document text
    • https://ef2e072a-e8a2-4438-804d-cc750be2e2f6.filesusr.com/ugd/6a22cb_15e210d32bce40a08f08f322c688ac08.pdf?index=trueIn PDF document text
    • https://8fc1c2d6-49ba-4d63-8b95-0327ef2b1627.filesusr.com/ugd/1849a1_9ba2605039e84b4d894a3fccafa13121.pdf?index=trueIn PDF document text
    • https://eee7329a-c4d5-4508-a8fd-a8ba515f7d9f.filesusr.com/ugd/5ed802_89ff8af16ab7410a9576976150667500.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/48332436010.pdfIn PDF document text
    • https://0108a07e-94d6-443d-bfa7-575dd38852ad.filesusr.com/ugd/756a01_fef95087f1e6464cbf82a77319b0dbd3.pdf?index=trueIn PDF document text
    • http://bususetut.epizy.com/lafumebeb.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/77118143624.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/bosch_glm_30_vs_glm_42.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/death_cure_movie_cast.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f49a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF49A 4936 bytes
SHA-256: 71f81f2d4310a5feaf172093cf44129d1ce6fe22c5d967e0c97f64830a3c9d3d
font_01_sfnt_off00010572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10572 10636 bytes
SHA-256: 8fc90e8911aa41c79712ed05f0eac46c9d77f540179a5c0b2af66daed486a09d

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