Malicious PDF — malware analysis report

Static analysis result for SHA-256 69f230e66c0e89b5…

MALICIOUS

PDF

87.2 KB Created: 2021-04-05 14:25:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: fbbe5794fa00aa39b690d5ba26261d9e SHA-1: 80622975cbfef5cb678b4594e32afa1f2152fd35 SHA-256: 69f230e66c0e89b56145f78617be435ccdfed268ca58f5dec1d24308fcec5e60
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The primary URL, 'https://midufefew.ru/award?keyword=cheesecake+factory+lunch+menu+pdf', is presented as a search result, aiming to trick users into clicking through. While no scripts were directly extracted, the PDF structure and extensive link farm indicate a malicious intent to redirect users to potentially harmful sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://midufefew.ru/award?keyword=cheesecake+factory+lunch+menu+pdf PDF link annotation
    • https://zesadokalefon.weebly.com/uploads/1/3/2/6/132681767/kinosoxolalesik-debipukiruroti-pikebaxenopuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408593/normal_6041b9bb49bcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379971/normal_6017be5c4f664.pdfIn PDF document text
    • https://wilogodomagifaw.weebly.com/uploads/1/3/4/7/134727865/8185171.pdfIn PDF document text
    • https://tipolapuponawog.weebly.com/uploads/1/3/2/6/132696210/3933908.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/852098cc-3e64-409e-b75a-94405e6726f4/nec_dterm_80_phone_feature_button_flashing.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/jariralawapadatat.pdfIn PDF document text
    • http://lesuketel.rf.gd/42125106089.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/43240922005.pdfIn PDF document text
    • http://xugibomexepef.rf.gd/75580856585.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20f358f2-7dad-42f6-b61a-dae5c564acaf/what_is_corporate_law_in_canada.pdfIn PDF document text
    • http://xokifenutotumu.epizy.com/18207155600.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21570a8e-7ee2-4957-8e98-d741d8128c7f/audrey_hepburn_singing_moon_river_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/lekinobudat.pdfIn PDF document text
    • http://senusekavopodu.rf.gd/40398764284.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05dd2c2d-f20a-445d-a6f7-3f0ca7620d65/lowafojogisaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bf38917-d09a-4a4f-bb94-a6af3d045301/ximufe.pdfIn PDF document text
    • http://xotewewo.rf.gd/what_is_the_best_planer_to_buy.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/uk_visit_visa_application_form_from_usa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffd02795-a265-4d8e-b89a-47210b771797/92206004466.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A1C 5464 bytes
SHA-256: 8de63e374b8454144b76b287931da3c4fae53f82efc68f0f59e850d5e9d46b2c
font_01_sfnt_off00011c87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C87 2572 bytes
SHA-256: 17d7703998d49b20629cf364b7275288f9b3421109ac200a3187b00b9d84d7b8
font_02_sfnt_off000127ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127AE 11512 bytes
SHA-256: 3db6cc69d530e939205815b816846ba6164834a1547592cc3f91afaa36963fbb