Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cdbfccf22eb56c7…

MALICIOUS

PDF

74.5 KB Created: 2021-03-31 16:39:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 00d9d34074d62ecfde24470416b6e8a1 SHA-1: c006b2eeac1087e4aaa2220b13afa27cb9e47f7a SHA-256: 0cdbfccf22eb56c7d3f9b58fe279048e2605b4936b8bd676794a3d168a41d94c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. The document contains numerous embedded URLs, many of which point to disposable domains and are likely used to host malicious content or redirect users to phishing sites. The presence of 'utm_term=excel+issue+log+template' suggests a lure to trick users into downloading a malicious file disguised as a useful document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/123?utm_term=excel+issue+log+template PDF link annotation
    • http://ital-girl.space/tozanow741.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379230/normal_6026b4c1ad538.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374980/normal_5fdac8aede3b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472766/normal_5fd89e31caf00.pdfIn PDF document text
    • http://fiwisud.getenjoyment.net/sotosigepu.pdfIn PDF document text
    • http://fredo.run/marketing_notesnlx5n.pdfIn PDF document text
    • http://fuvagezilavez.mygamesonline.org/57615691082.pdfIn PDF document text
    • http://nawitebexu.medianewsonline.com/16781181721.pdfIn PDF document text
    • http://help-copyrightservice.xyz/pasimerelabutedeturogazem31yw0.pdfIn PDF document text
    • http://rbqjkwklnd.xyz/comparative_politics_today_a_world_v9vavy.pdfIn PDF document text
    • http://eliyalte.com/rirafejizawukuvzxdiu.pdfIn PDF document text
    • http://vodoroding.info/orbit_easy_dial_sprinkler_timer_instructionsd8rca.pdfIn PDF document text
    • http://zarumesa.mypressonline.com/join_i_love.pdfIn PDF document text
    • http://barbanapoli.moscow/jekipezuropatojelevosathnutw.pdfIn PDF document text
    • http://legendbilisim.com/magic_mouse_2_space_gray_amazon9dm8y.pdfIn PDF document text
    • http://xosubowavenu.mypressonline.com/dr._seuss_sleep_book_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490953/normal_5ff9277dcb76a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419225/normal_60011fb284fa8.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/5038530e-d75f-42a4-864c-9c170e9f661d/29940851456.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68139d17-00a7-4abd-9460-8b9ca474afdc/seores_del_narco_autor.pdfIn PDF document text
    • http://lumosaneja.onlinewebshop.net/7307504931.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_off0000e49b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49B 5184 bytes
SHA-256: 17742e213d786f3d7b67456b697ae4f1bf6fd89ec61f510a77938eeb6a375bb7
font_01_sfnt_off0000f637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF637 10936 bytes
SHA-256: cc471e63b421b5e06437a224c4a97f50da040f82c66bec204f2b61c79e21cd6d

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