Malicious PDF — malware analysis report

Static analysis result for SHA-256 1156c57333bfa5c3…

MALICIOUS

PDF

75.9 KB Created: 2021-04-04 10:19:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 368d66f12e834e9b42422f53a89a2c3c SHA-1: 813391fddeb6d1fae9fffbe356f3aa6b3326ff31 SHA-256: 1156c57333bfa5c340da02f4b425698632dd1a7c37a3712081fdcc1ce8c3c068
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though heavily corrupted, suggests a lure related to 'resetting Apple Time Capsule', which is likely a pretext to drive users to malicious sites. No scripts were extracted, but the overall structure and URL distribution strongly indicate a phishing or malware distribution campaign.

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://ponafet.ru/strik?utm_term=how+to+reset+apple+time+capsule PDF link annotation
    • http://sosujinoriwi.22web.org/ace_personal_trainer_book.pdfIn PDF document text
    • http://unreguezff.rest/94766039089pas69.pdfIn PDF document text
    • https://bewimowijukoja.weebly.com/uploads/1/3/4/5/134584545/judufomejozasim_gesuvebaz_gusok.pdfIn PDF document text
    • http://blablablacar.online/pamobepugojwpu9c.pdfIn PDF document text
    • https://cdn.sqhk.co/tizadufof/hiheSjc/40422541622.pdfIn PDF document text
    • https://cdn.sqhk.co/nububufi/jZVhfjb/khleo_thomas_parents.pdfIn PDF document text
    • http://ig-mediateam.net/wabafofovulazevas3efhr.pdfIn PDF document text
    • http://vidclips.design/544281884230emvi.pdfIn PDF document text
    • https://fepobewute.weebly.com/uploads/1/3/5/3/135386667/nireka_favuzaxuxetopib_nawexoxuko.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/iujcigx/xmeye_cloud_login_not_working.pdfIn PDF document text
    • https://wivezinafixozut.weebly.com/uploads/1/3/0/9/130969190/6728768.pdfIn PDF document text
    • https://cdn.sqhk.co/matajikiwov/zijihqr/amazon_prime_cyber_monday_toys.pdfIn PDF document text
    • https://cdn.sqhk.co/liramesot/lrtm6vn/flip_animation_in_android_xml.pdfIn PDF document text
    • https://kumoguvam.weebly.com/uploads/1/3/5/3/135382809/5873002.pdfIn PDF document text
    • http://sallehq.xyz/digukefosewuroxuw53t9f.pdfIn PDF document text
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/towupofuxapaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wivukirotodit.epizy.com/fulenada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd82f4f0-021c-4380-802f-c2ab31480995/how_to_speak_english_fluently_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4f41965-b63b-4d06-b7fb-203e2f83b0c0/fawinekofugabese.pdfIn PDF document text
    • http://wuxodevidupibe.epizy.com/bedagabaxegidasate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23b5e839-6a40-4512-afe7-3e5e36548ad4/92101838819.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c48f0d3-c3c4-425c-80b2-633a7b3bf892/gavigemufifefe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c331bff-ba99-403a-96c1-a9638532d34a/26522544070.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE59 5132 bytes
SHA-256: 1624cb7dd9de06055336e3ef17feb6609a69ed29efcf3bd9d595d8433f8918e1
font_01_sfnt_off0000ffc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC8 10180 bytes
SHA-256: 5c51c1c2a9631eabfc55b2cc6d80c2a7804d403b7fcb8df3f8836ef3e271289b

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