Malicious PDF — malware analysis report

Static analysis result for SHA-256 11f1046f0a1c46fa…

MALICIOUS

PDF

115.1 KB Created: 2021-02-28 03:25:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: fd916f6608c05f7a0ae41512f4b937a0 SHA-1: 5ebe6be6a9c00da226e0edcb201d7e2c5e4071d4 SHA-256: 11f1046f0a1c46fadaab369871991c9d98e65efcfc28b6adadcc9a513d93ac57
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or phishing distribution mechanism. The presence of numerous external PDF links and the overall structure strongly indicate an attempt to lure users to malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/award?keyword=what+does+tenth+mean+sentenced+to+time+served PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4411481/normal_5fca587d37fbe.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/hcqgh7y/pefazezijerifigajam.pdfIn PDF document text
    • https://cdn.sqhk.co/burajugi/hdngchh/pirubebalujenazi.pdfIn PDF document text
    • https://vomuzubedabop.weebly.com/uploads/1/3/0/9/130969103/begeriwonenopes.pdfIn PDF document text
    • https://vikakexotokipo.weebly.com/uploads/1/3/0/9/130969200/xuxuvawadixase-vokir-jegezux-lemibajodove.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/uTihmhg/vevufelevesikuw.pdfIn PDF document text
    • https://cdn.sqhk.co/vumorumuvogi/ghifjak/snow_bros_arcade_cabinet.pdfIn PDF document text
    • https://zerasogamonan.weebly.com/uploads/1/3/0/7/130775055/d477c73db2.pdfIn PDF document text
    • https://jetabasujupeg.weebly.com/uploads/1/3/4/7/134703241/tonaxosa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391319/normal_601297a3d0f17.pdfIn PDF document text
    • http://xoziduso.mypressonline.com/georges_secret_key_to_the_universe_book_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483870/normal_60093fcc67e93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451039/normal_6014d1518e264.pdfIn PDF document text
    • http://dovulup.iblogger.org/towolakopoxolijokikuwuzi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fevedudebe.epizy.com/58974268949.pdfIn PDF document text
    • http://bibikefogive.epizy.com/brother_mfc_7360n_printer_toner_reset.pdfIn PDF document text
    • http://vakizonozajaxe.onlinewebshop.net/sandisk_clip_sport_plus_mp3_player_with_bluetooth.pdfIn PDF document text
    • http://tesuzegijibonu.epizy.com/bacterial_brain_abscess_guidelines.pdfIn PDF document text
    • http://viwuwijagabote.myartsonline.com/30610383107.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_off0001890a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1890A 5220 bytes
SHA-256: cfbac25b505761b03c768cd559ea3dcb711f016f939b55ad34e8abe8acb71992
font_01_sfnt_off00019ab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19AB0 10428 bytes
SHA-256: 3970c9411437290ff42282c7425a9aa16cfee7c48756698b1fc72b7cd127402f

Open this report in the interactive analyzer, or submit your own file for analysis.