Malicious PDF — malware analysis report

Static analysis result for SHA-256 00fbcb83e641b2ac…

MALICIOUS

PDF

83.4 KB Created: 2021-04-01 21:00:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 4a2df7523e5bee1c4f6cd40970af8350 SHA-1: 7fbe17ff785b687ad1d4e95bb7c55580c875abb5 SHA-256: 00fbcb83e641b2ac58e0f07ea6c514d0c5c8c89d855a5f2a56d8d01a4d46c08e
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, with a primary suspicious URL pointing to 'lozipotod.ru', suggesting a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing attempt designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://lozipotod.ru/wix?keyword=eso+zygor+guide+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421061/normal_5ffb3d1e3cf5e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365599/normal_600849b174617.pdfIn PDF document text
    • http://ideal-it.fun/724352342724roav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483362/normal_5fe8155a3eeb1.pdfIn PDF document text
    • http://vvinorama.fun/apa_citation_guidelines_journaldq0cl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462982/normal_604250b43afc8.pdfIn PDF document text
    • http://rawenspant.online/10790244682xnv5h.pdfIn PDF document text
    • http://coloradocustomelectric.com/international_marketing_latest_news_in_hindi4962p.pdfIn PDF document text
    • http://kavopiluxum.iblogger.org/american_cinematographer_magazine_free_download.pdfIn PDF document text
    • http://accface.in/zekidowodugavalai24ea.pdfIn PDF document text
    • http://oblakova.ru/whirlpool_gold_french_door_bottom_freezer_problemsizb5o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387218/normal_6050e670d7332.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_6056d679afe56.pdfIn PDF document text
    • http://inostrana.com/what_do_you_wear_to_a_summer_garden_partyjejsf.pdfIn PDF document text
    • http://makedctl.site/64366132337s67w0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451750/normal_6042acd289412.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390055/normal_6045c2d4c8d40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384039/normal_5fd2510cd38b9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3d73ec66-e24e-4607-99a5-aa3c333c10ea.filesusr.com/ugd/a96454_2cc75163c76e4d6e9a127ea5ce6bd916.pdf?index=trueIn PDF document text
    • https://6c8ebe11-725c-420b-823a-68bc39d02ad2.filesusr.com/ugd/3e87bf_416677770679432b8fc39b553df613b3.pdf?index=trueIn PDF document text
    • https://307a23dc-bb60-4906-9a68-69e45957aa19.filesusr.com/ugd/d2057d_77378b7ef5144ee5bb102c4eebea882d.pdf?index=trueIn PDF document text
    • https://f59c0a4d-c104-43ac-8966-a5978cdf1b8c.filesusr.com/ugd/0c1ebd_3247355ec37e4dae9f1cf426e2aaabf0.pdf?index=trueIn PDF document text
    • http://nisogifamesada.epizy.com/serenity_capsules_doterra.pdfIn PDF document text
    • https://9526c93a-d340-4dca-b5fd-2864ff0888c4.filesusr.com/ugd/4c3d6a_8b871aa37ff84e488b4d32970eaff8e7.pdf?index=trueIn PDF document text
    • http://dogurof.epizy.com/duzemivesabagusubok.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B4 5192 bytes
SHA-256: afab5c169082541dde6a0bd75eb095fd26f31f1781483088c01bdc83506c3585
font_01_sfnt_off0001038f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1038F 11004 bytes
SHA-256: b773ddaa9da9da6bfae233ff7672a94dcd513da8636ca58e5b00756a7a809751
font_02_sfnt_off00012958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12958 16140 bytes
SHA-256: 159427b32ed66bfbde86def5e6c2992bde67dfb25400c4000a37c9b59b949b61