Malicious PDF — malware analysis report

Static analysis result for SHA-256 208658cbe0fa1024…

MALICIOUS

PDF

72.8 KB Created: 2021-04-01 16:24:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b56346652aa08c32e1592d9b60b31a81 SHA-1: 8e7c92d2dd3eb0e4e4b39d05696b568d483b2ed0 SHA-256: 208658cbe0fa1024dbe8b34ef846634599572b66d7b73650ce3a390e9742a1dc
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-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.
  • 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://xezojetit.ru/wix?keyword=properties+of+solids+liquids+and+gases+ks2+worksheet PDF link annotation
    • http://eurozone.pro/85045592919cqtfi.pdfIn PDF document text
    • http://ehaberdevlet.com/jet_airways_labour_dispute_case_studytrvw9.pdfIn PDF document text
    • http://apple-fruit.space/60289417338fjt9a.pdfIn PDF document text
    • http://xujaxul.mywebcommunity.org/dixibadigelagabusiwura.pdfIn PDF document text
    • http://o-karte-kopilka.com/femasafonigubitrk.pdfIn PDF document text
    • http://stonersfranchise.com/416943803982zrsc.pdfIn PDF document text
    • http://takaweri.mywebcommunity.org/xawoxelunidewov.pdfIn PDF document text
    • http://klyshsheff.xyz/39747160761fd2ro.pdfIn PDF document text
    • http://1eyvgo.xyz/folarapebipoludawibubixue74o3.pdfIn PDF document text
    • http://nyvelsets.online/2640372172aotyx.pdfIn PDF document text
    • http://foxiduwanati.mygamesonline.org/bahishti_zewar_in_urdu_free_download.pdfIn PDF document text
    • http://kukushka.space/neuralcam_-_night_mode_camera_apkeh2jr.pdfIn PDF document text
    • http://thestablestl.com/xakeditixigorezozekbak51.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/55aa508f-e727-4158-b455-9ba6c892413f/lonely_planet_ebook_usas_best_trips.pdfIn PDF document text
    • https://15319a82-8c66-4906-b3c2-464277991f2b.filesusr.com/ugd/070acf_4c9393defa454fe49f5c303d7a516959.pdf?index=trueIn PDF document text
    • http://zatibesen.epizy.com/datuwupuvuzef.pdfIn PDF document text
    • http://zujuguj.epizy.com/80121504675.pdfIn PDF document text
    • https://6acf0ca1-aa41-4771-8b91-54baff69ee7f.filesusr.com/ugd/7d1dc9_7111dd2fa5bd49789e9cd71a1c01a1bb.pdf?index=trueIn PDF document text
    • http://xijuroluzuka.epizy.com/what_does_a_restaurant_operations_manager_do.pdfIn PDF document text
    • http://jewofeket.onlinewebshop.net/bukhari_sharif_jild_1_in_urdu.pdfIn PDF document text
    • http://vomozenofeke.epizy.com/72633660692.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10af753c-c99a-4367-8e51-5fb86158cf28/timex_indiglo_night_light_clock.pdfIn PDF document text
    • http://suwuriru.onlinewebshop.net/fenuvuji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be7bd738-c3ed-4967-8818-3c5c50c41d2d/70389272620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c76e04f4-ae23-4a99-a771-976a84acf866/40842703652.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_off0000dcb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB6 5716 bytes
SHA-256: 8c879e751caf3f56835b24c801fc9fd82ebc63df69c9178e7144979fa03f65bd
font_01_sfnt_off0000f02e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02E 10616 bytes
SHA-256: 20d5eb2391b086b923ed25922b7fb0838f46870f3b22926fd64e73f803b97bc5

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