Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1861695a62ce56b…

MALICIOUS

PDF

78.7 KB Created: 2021-06-09 09:16:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f6b0f76188f94c0731c254fd1b6c5660 SHA-1: 1342e036a3894d37ad700ebeb0ef928abe4545cd SHA-256: e1861695a62ce56bd1c467eb3a7fad4872e01a374abdb277530b35ab4826783d
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It contains a large number of external links, many hosted on disposable domains like weebly.com, suggesting a link farm or SEO spam operation. The embedded URLs and the document's structure indicate an attempt to redirect users to potentially malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://cructi.ru/pbw?utm_term=strength+and+weakness+interview+sample+answers PDF link annotation
    • https://pebusopewege.weebly.com/uploads/1/3/4/7/134752512/libidolu-rebuwul-toxos-rumasow.pdfIn PDF document text
    • https://nogisapu.weebly.com/uploads/1/3/1/4/131453993/banibepar-mobifulu.pdfIn PDF document text
    • https://vizegibog.weebly.com/uploads/1/3/4/4/134458583/zalikanupofu.pdfIn PDF document text
    • https://fedubipogumuwu.weebly.com/uploads/1/3/1/3/131379546/tusojuximomiga.pdfIn PDF document text
    • https://gowukamumikezaj.weebly.com/uploads/1/3/4/7/134769013/f77902e9e.pdfIn PDF document text
    • https://gozezitigaja.weebly.com/uploads/1/3/4/3/134340412/9245255.pdfIn PDF document text
    • https://sovuzozasofebod.weebly.com/uploads/1/3/4/3/134343281/mexomi.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://uploads.strikinglycdn.com/files/e52dcfba-3bf5-43e5-a05a-24d3fd167b14/how_many_units_of_corn_seed_per_acre.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/129e1f9c-e965-4aa1-8df2-072b228763c2/corte_de_espinhos_e_rosas_google_drive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fc4a47b-04a9-4456-8121-6e4f76931dac/99963714597.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/786ab72d-2f47-4732-adef-f8125e09c437/spelling_word_list_template.pdfIn PDF document text
    • http://pilujibos.pbworks.com/f/android_secret_codes_for_sportybet_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0e22cd8-a3a6-4768-bf07-97ea989738a0/cuantos_litros_de_sangre_tiene_el_cuerpo_humano_nio.pdfIn PDF document text
    • http://xedenuw.pbworks.com/f/76723179616.pdfIn PDF document text
    • http://zikupuzajix.pbworks.com/f/aplicaciones_de_las_reacciones_de_oxido-reduccion_en_la_industria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af279425-4161-4d97-8ce1-c08c348c0662/what_is_the_history_of_the_sweet_potato_starch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cb65b93-1c7b-4238-9a80-d5849ca6db83/skyrim_legendary_tips.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0732d6cb-afb2-4d88-b8fd-72ccdf893d18/wordpress_user_roles_database.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c245af4c-ae64-4504-ad5a-fb6ef59dc81d/what_does_xi_zao_jian_mean_in_chinese.pdfIn PDF document text
    • http://tavaretaz.pbworks.com/w/file/fetch/144766656/how_to_install_my_xfi_gateway.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8114096-7219-4219-a523-48d848180ed9/zemomuniwesuj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE846 5368 bytes
SHA-256: 74e97260b8b5e21bfaec76f2f0f887efa85e8f6b0122f4427acf8f9fcd866951
font_01_sfnt_off0000fa68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA68 10816 bytes
SHA-256: 9d84dfab21dbe26bdfd73023737f4feb2fa82c13593f436eeb227dcb120c6a92
font_02_sfnt_off00011eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EEA 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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