Malicious PDF — malware analysis report

Static analysis result for SHA-256 365b25a06cb07b25…

MALICIOUS

PDF

90.3 KB Created: 2021-06-02 03:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 573c1b930bcc8744a2a788ec380478a8 SHA-1: 66dd6accb277fb107de8d4480d540d44f673b5d6 SHA-256: 365b25a06cb07b2510ab2a8be6d5d4e5a133c3a335247927e7067213296e0921
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains an embedded URL that redirects to a suspicious domain, identified as a link farm on disposable hosting. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the presence of the malicious URL and the heuristic findings suggest an attempt to redirect the user to a potentially harmful site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 4

  • 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://garglob.ru/pbw?utm_term=toyota+hilux+revo+2019+price+in+ethiopia PDF link annotation
    • https://nojilanoxejajej.weebly.com/uploads/1/3/4/8/134856497/6c239b505a.pdfIn PDF document text
    • https://jofufibiwew.weebly.com/uploads/1/3/5/3/135347649/wonofedogovuvisigara.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422368/normal_604cf06a2710b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414501/normal_60560e3a16e8c.pdfIn PDF document text
    • https://xujiwedebul.weebly.com/uploads/1/3/4/3/134317386/tekovi.pdfIn PDF document text
    • https://tumotasefon.weebly.com/uploads/1/3/5/3/135317172/3182311.pdfIn PDF document text
    • https://vokijovagugudis.weebly.com/uploads/1/3/0/7/130776016/batuwote-serejati-gezibixo-xaniroxu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480744/normal_6056b805e8769.pdfIn PDF document text
    • https://fuviwezajoz.weebly.com/uploads/1/3/1/3/131379384/3043701.pdfIn PDF document text
    • https://femixazate.weebly.com/uploads/1/3/4/3/134363246/kiwozal.pdfIn PDF document text
    • https://lubutivewem.weebly.com/uploads/1/3/4/8/134881275/54749624.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470223/normal_60582a4cc7ae2.pdfIn PDF document text
    • https://pegugigatusib.weebly.com/uploads/1/3/4/4/134460290/fexokebide.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
    • http://jizakatum.pbworks.com/f/how_to_write_a_warranty_certificate.pdfIn PDF document text
    • http://risuxujuvu.pbworks.com/w/file/fetch/144483795/doruzunevobegubun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6517724-d2ee-4189-96cc-46b08e4e0af1/65032572316.pdfIn PDF document text
    • http://bupataved.pbworks.com/f/kefubewaduzabetadijo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/484de43a-5f46-4317-8bd0-df6fd5a6d2b7/how_to_use_last_fm_with_apple_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca493875-36b9-47d7-a61a-cc3d44207364/51269650956.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecd532f1-7139-440c-b022-ac012dde941d/hoover_max_extract_dual_v_widepath_carpet_washer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/858abe42-caa8-4f7a-803f-ee95f97e35be/tai_chi_108_steps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec9115c6-3ccd-471e-970d-cfa8427da613/lego_ideas_book.pdfIn PDF document text
    • http://masawumel.pbworks.com/f/maytag_bravos_quiet_series_300_washer_will_not_drain.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b64577ea-6ee9-4f49-8c66-1050520a6aa3/50523608497.pdfIn PDF document text
    • http://kefimazusob.pbworks.com/w/file/fetch/144424929/suwevapob.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA5 6876 bytes
SHA-256: ce6c25ef86824f8879b3cf8db8262abe41d74828965206d33de2d1711840a9f7
font_01_sfnt_off0000ffda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFDA 5388 bytes
SHA-256: 44cd5c57cb4c9053ffd5035c621caa36e7e26ba528963507ee7cbff7ab779380
font_02_sfnt_off00011236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11236 10324 bytes
SHA-256: 50ee5156f814819d6cc62b5e4eddc8ed03c4762ff4950bf5eed80e8a8bf7c4c2
font_03_sfnt_off000135c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135C1 16144 bytes
SHA-256: f0a8b786da721c7415a59d91fbce3b20bbb98ea32e48857ac1ff22d53b00ec29
font_04_sfnt_off00014ac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AC5 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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