Malicious PDF — malware analysis report

Static analysis result for SHA-256 e92a20c42cd0f298…

MALICIOUS

PDF

79.9 KB Created: 2021-03-14 13:30:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 30eabca2a4bdbd36c3927e5f93539226 SHA-1: 9c558db25bde3508c1addb0c9cfe3c4b033eb5bc SHA-256: e92a20c42cd0f298c061969311c39e83c42047119f03b571583ded027274bc9c
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable hosting or domains with suspicious names, indicating a link farm or phishing operation. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were extracted, the PDF structure and embedded URLs are indicative of a phishing or malicious redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 6

  • 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 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://vilenefex.ru/123?utm_term=daru+badnaam+full+video+song++1080p PDF link annotation
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/duniwaluzorufimava.pdfIn PDF document text
    • http://hackins.site/kawesurotitoserofq2jf.pdfIn PDF document text
    • http://osthondroz.com/pumominefunekaxw4rfb.pdfIn PDF document text
    • http://lalozakuren.66ghz.com/87980141679.pdfIn PDF document text
    • https://popajilosofov.weebly.com/uploads/1/3/0/7/130776408/a530e5ee0.pdfIn PDF document text
    • http://sberpodarok2020.online/pathfinder_kingmaker_weapons_listtmii4.pdfIn PDF document text
    • https://fevuvewuvadudu.weebly.com/uploads/1/3/4/6/134650824/fibujiropido.pdfIn PDF document text
    • https://dukozajaxal.weebly.com/uploads/1/3/4/0/134017298/libarula.pdfIn PDF document text
    • http://oneitstore.info/zilegifavotudikasipox2qm1.pdfIn PDF document text
    • http://priz24.site/thirteen_reasons_why_new_characterszr7su.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/f0483cb6-9543-4fa6-9044-f80f98b42c22/what_are_the_five_major_modes_of_action_for_antibiotics.pdfIn PDF document text
    • https://12c48f50-3553-44c7-a31c-19fc5df83d07.filesusr.com/ugd/7e0eb0_1ba2a088010e4d4b8228b1bded811e7a.pdf?index=trueIn PDF document text
    • https://ab2ac9d4-4772-4872-829d-c19fde0a4f90.filesusr.com/ugd/b919b3_9fb53f2e3b094b6a98c5b631fa0af369.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/20e36fff-bddc-4fac-8ed7-fc7846cf4df2/kali_linux_raspberry_pi_4_32_or_64-bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14f943cd-d560-4b04-afe6-056fec421e1d/how_much_does_an_international_wire_transfer_cost_bank_of_america.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e5da534-3626-4964-b47a-5567a540e94f/valuvizuj.pdfIn PDF document text
    • http://muwirosogop.epizy.com/dojababakilevolerin.pdfIn PDF document text
    • https://de2a8dfc-dc8d-4d62-be3b-f97abdd17bf6.filesusr.com/ugd/c722c2_a5a467e8cc0d4d2dad08794d69f67547.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d157499e-78b4-4460-bca9-672cc3529353/76690150540.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f4277c3-623b-45c9-aaf1-68a659afa998/rise_of_the_warrior_cop_essay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9be5fdbe-3037-4ced-af8a-bd5399eddaa3/how_to_clean_bissell_powerforce_helix_filter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1843fd0-e8a3-49f1-8abd-1d604354fb2a/52513761506.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b570e0b1-71c0-4b7d-962d-b0a272df4574/xupabuwaxasoxumipelujafo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD714 5752 bytes
SHA-256: 28ea74b633ac54f7b7a1afa61a2065cffa0985944519fc9d95e1fb83180fea18
font_01_sfnt_off0000ea8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8C 10532 bytes
SHA-256: 12989d21b6318a45a2ffc4b5d500bad3b2858f4e13a315da550652b585ae06a9
font_02_sfnt_off00010ee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EE0 16096 bytes
SHA-256: 3a87a2a80cb0740ff7ad33dbd9b35031d90241dfccc5ab96a3d2c3133af9c3ca
font_03_sfnt_off000123aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123AA 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.