Malicious PDF — malware analysis report

Static analysis result for SHA-256 18841332199a3e05…

MALICIOUS

PDF

84.0 KB Created: 2021-04-27 00:11:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4ca2bc549dfc3e9f572d5507b994dcb SHA-1: b83d04ae1b0a63c77667e8a0c52a8feeacf5e56d SHA-256: 18841332199a3e05612ff48bf58e8fff0df915fdc4268030ab87da5f264e36a8
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. Several of these links point to suspicious domains, including 'lozipotod.ru' and 'menafemudiwifog.weebly.com', suggesting a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=is+lg+b9+120hz
    • https://menafemudiwifog.weebly.com/uploads/1/3/0/8/130813668/kapowowekisuf.pdf
    • http://xidufefonudug.sportsontheweb.net/15322023921.pdf
    • https://taregegojife.weebly.com/uploads/1/3/3/9/133997559/turobamojif_dojusijewakamox_vebefuminijo.pdf
    • https://begiruxuvasepi.weebly.com/uploads/1/3/5/3/135351124/6043191.pdf
    • https://zitakutuseg.weebly.com/uploads/1/3/5/9/135994262/dimesi.pdf
    • https://bigudiwox.weebly.com/uploads/1/3/5/3/135304820/67a154e001e893f.pdf
    • http://gapijet.scienceontheweb.net/ausencia_de_cuerpo_calloso.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xijuxosisomuna/90748691269.pdf
    • https://c07b3cb0-7d4a-4e65-9c62-eb3bd0ce3b6b.filesusr.com/ugd/7560d5_1692343115f5418aa2f394f8be469314.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fc0930b1-ac57-4f37-a91d-ffd208a1b414/cello_suite_no.1_in_d_by_j.s._bach_guitar.pdf
    • https://a39ac558-8fe8-437d-9e10-dc9402d6cb9c.filesusr.com/ugd/1ebe14_f18ded8e43ed477fa0a511aef916806e.pdf?index=true
    • http://seroroxunabolu.onlinewebshop.net/how_do_i_get_a_copy_of_my_pals_card.pdf
    • https://uploads.strikinglycdn.com/files/6d63b493-29e6-4346-adea-037897deb6a1/31585286228.pdf
    • https://uploads.strikinglycdn.com/files/79ecdbc4-43fb-4f1a-bbf2-d12c94c8712b/fimivijesajadagibapod.pdf
    • https://uploads.strikinglycdn.com/files/ea2089d1-db12-4f9f-af48-d904e14fd698/the_devils_delusion_david_berlinski.pdf
    • https://s3.amazonaws.com/falufusu/36752514365.pdf
    • https://f7e05ffc-afae-4d19-be15-7e9c659e5e5f.filesusr.com/ugd/72f62b_3f7309d7c0624c368595eea13880e62f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/64f65e4e-c17b-42c3-85d9-738ac047b6e7/counter_hack_reloaded_github.pdf
    • https://s3.amazonaws.com/zisulamisozoto/firing_employee_synonyms.pdf
    • https://uploads.strikinglycdn.com/files/2842b15a-bdfb-4b56-9e76-c5f7391dd516/what_are_some_easy_songs_to_play_on_the_guitar.pdf
    • https://uploads.strikinglycdn.com/files/066a0984-9465-4ff7-94a7-eecf6c0b490b/dometic_air_conditioner_replacement_parts.pdf
    • http://jazopizebe.atwebpages.com/dubai_airport_map.pdf
    • https://uploads.strikinglycdn.com/files/60077c47-d7a6-4e41-9e64-6249055e34c9/72201790988.pdf
    • https://s3.amazonaws.com/rorives/terakedowi.pdf
    • https://30372bae-fb3d-4285-bee0-d91e70c22047.filesusr.com/ugd/835091_c207091d93754ace81d0936107a04ad2.pdf?index=true
    • https://2b01876c-5741-4e94-bfb6-30973e4a6517.filesusr.com/ugd/45d688_899d9cfb35cc461cb883a14de75bac89.pdf?index=true
    • https://uploads.strikinglycdn.com/files/8db0a45e-bf5b-41c2-803c-f9a84f048a73/online_project_management_software_free.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001042a.bin
024857c5f496ee2862c78c41c00235993feda5c0cbb24a8dee98f555e2e63808		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1042A 5252 bytes
font_01_sfnt_off00011615.bin
63da2773b61ddfcba82f454192ed3544f6b1e56b7269438b09b2da9a9aa1dc53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11615 13612 bytes

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