Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff0b059d40f889fe…

MALICIOUS

PDF

77.7 KB Created: 2021-03-10 17:41:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 0e6ec0ede0e33c29c7b63e76549b3a6a SHA-1: a316d814a7e55b301e063cc59998180d135b9783 SHA-256: ff0b059d40f889fe9f36b8846eea4b84f956e32e00550f559fa5e6caab06a001
126 Risk Score

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains, indicating a likely phishing or spam campaign. The presence of external URIs and the link farm heuristic suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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 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://soxebez.ru/123?utm_term=canederli+speck+e+formaggio+bimby PDF link annotation
    • http://smeh-mif.space/97836079824q1y9g.pdfIn PDF document text
    • http://testrun.ru/calories_in_taco_bell_crunchy_chicken_taco2wlz8.pdfIn PDF document text
    • https://lufegema.weebly.com/uploads/1/3/4/1/134132410/6dfa4cd6a.pdfIn PDF document text
    • http://pixenevalir.22web.org/cara_membuat_google_sheet_online.pdfIn PDF document text
    • http://talkme-news.info/anatomia_de_los_animales_domesticos6eusa.pdfIn PDF document text
    • http://chambrehq.xyz/plantar_fasciitis_exercises_espanoliapf5.pdfIn PDF document text
    • https://rixowumunek.weebly.com/uploads/1/3/5/3/135330445/1adce158a35a.pdfIn PDF document text
    • https://zerasogamonan.weebly.com/uploads/1/3/0/7/130775055/tejorozumup_lenesufuzej_davobu_xuzakoragonixa.pdfIn PDF document text
    • https://tadinitalu.weebly.com/uploads/1/3/4/7/134744808/fitugasufiletun.pdfIn PDF document text
    • https://wijodemarivupi.weebly.com/uploads/1/3/4/8/134861972/supujamevabaf_deraxep_jalawab_vejixuposipituf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vurasoda.rf.gd/que_es_capacidad_antioxidante.pdfIn PDF document text
    • http://wesaloxovep.rf.gd/59512162864.pdfIn PDF document text
    • https://95a57b4d-a24c-4412-bd87-88f4f885d252.filesusr.com/ugd/011e4b_9966ea45cb244bedb5657b7e9c1f18da.pdf?index=trueIn PDF document text
    • http://vofolosozoz.epizy.com/the_basketball_diaries_book_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c58abb2c-734e-470e-b5fb-1206a8b43e10/05_dodge_ram_1500_fuel_pump_relay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b536be32-c4ed-47b1-9a7f-32f5a9fbef52/matlab_free_download_cracked_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dc7e929-b0ca-42b4-868e-f2eabb3a0a88/honda_gx390_generator_service_manual.pdfIn PDF document text
    • https://76c9fb28-c10e-4950-85be-37de24a2ede8.filesusr.com/ugd/fa32a6_6720b801cfdb431e97cb50a378743bd9.pdf?index=trueIn PDF document text
    • http://segudufarus.epizy.com/calculus_limits_practice_problems_with_answers.pdfIn PDF document text
    • http://gurevetafajes.epizy.com/nkjv_study_bible_for_sale.pdfIn PDF document text
    • http://neveraworas.rf.gd/nsx_design_guide.pdfIn PDF document text
    • http://sejisetelasisel.epizy.com/paruredujigorukinum.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_off0000e6c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C2 5688 bytes
SHA-256: 8e246076bea150bb3c9a6f81277c94115ef0136efdef73679d7124e84ee88689
font_01_sfnt_off0000fa00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA00 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0001028e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1028E 11764 bytes
SHA-256: 4f7c44824e7ba233971e26bea42e20a945d82910f1adf5994c0a039703fe5347

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