Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff69c49317790121…

MALICIOUS

PDF

81.2 KB Created: 2021-03-27 23:29:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 7c005e3d12dffcc4ebfe0d8471161efc SHA-1: 50f721a4f955815418c8e7e4e65771b83ef29b66 SHA-256: ff69c493177901210904a76e60bf8cbeefcdb2078400edba23ed170413f8a580
194 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The presence of a 'download button' lure and a high ML classifier score further indicate malicious intent. ClamAV also detected this file as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://lozipotod.ru/aws?utm_term=google+maps+draw+a+route+on+iphone PDF link annotation
    • http://nemugub.mywebcommunity.org/dermatitis_atopik_pada_bayi.pdfIn PDF document text
    • http://reduslimitalia-ufficiale.site/achievement_test_examples6u2rm.pdfIn PDF document text
    • http://idclick.cash/81152605750f2g8g.pdfIn PDF document text
    • http://jonebukusopovet.mygamesonline.org/43633231875.pdfIn PDF document text
    • http://vamekujo.66ghz.com/rent_bond_lodgement_form.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://091a8774-b5bd-4fb7-8799-8d1ca0ca44ad.filesusr.com/ugd/8716ab_3b4a146affcb4f01a7c61753747db42e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcae9bdf-e005-45ca-8312-fcd5e1e4cba8/wemaweratoz.pdfIn PDF document text
    • https://7b4e975e-109f-4397-a679-93e438ff1453.filesusr.com/ugd/c33f71_a71ae0a484dc455eb1483cf58fd75a89.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f7fec03-43e0-43c5-96ba-e1ce60d90621/microsoft_excel_2010_tutorial_free_download.pdfIn PDF document text
    • https://7a579b3f-ce96-4c66-abdc-991530493d29.filesusr.com/ugd/010c6b_3acc8d59e26f45afacb3c30c5c32d6d5.pdf?index=trueIn PDF document text
    • https://0b7b936c-93ac-4a60-9644-6ba220b934cc.filesusr.com/ugd/b4bf80_1d647f7b3c2b406e8f0122e6b6744456.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/881a1410-d8bb-4d74-bb2b-882d65aa49e0/33617389946.pdfIn PDF document text
    • https://1b6fbac1-9b66-4609-9151-81f5d4c316f7.filesusr.com/ugd/5e81b9_19a6d4066bfc41feb3aec5c0ef2680ab.pdf?index=trueIn PDF document text
    • http://ropupifalapoges.atwebpages.com/28974483175.pdfIn PDF document text
    • http://kesotufujurox.rf.gd/school_exposure_visit_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/993fd399-f927-46de-9b6f-15bef7ac7d3a/95568226851.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79bc9629-efda-44fa-a86f-3216673a1d52/how_to_open_a_quell_fire_alarm.pdfIn PDF document text
    • https://ad843f61-c544-48d7-8cfb-3c048b9edb46.filesusr.com/ugd/0dd9ed_c9418550b45940e788e138e5139728ac.pdf?index=trueIn PDF document text
    • https://d2497fa9-5496-4194-9764-f4b168485e88.filesusr.com/ugd/eed259_0e41c47726a740f791d2fd0e9692c850.pdf?index=trueIn PDF document text
    • https://85fc0914-20e3-4f1c-be8c-de7e6f89f47e.filesusr.com/ugd/a44510_843a23c254cf49ea9acd71aebeb250e8.pdf?index=trueIn PDF document text
    • https://45180a89-8b92-4d54-a4c6-cdf0ad6af3c7.filesusr.com/ugd/2b98a3_ded3e3fadbbe4b0db9d6dd0505d35ae0.pdf?index=trueIn 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_off0000f28c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28C 5376 bytes
SHA-256: 0db2b0e4cc11a01b970774206bd420e5240fadb5ad15a3dace3a850683ad265f
font_01_sfnt_off000104ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104BA 10676 bytes
SHA-256: 27fac09c0bf7d81ea721ef050b6b1b147c4b30e27ec4f24571caf6355ff1d2ea
font_02_sfnt_off00012960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12960 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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