Malicious PDF — malware analysis report

Static analysis result for SHA-256 00218dd0a2acdf74…

MALICIOUS

PDF

72.8 KB Created: 2021-02-23 00:32:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 142085df7d457a970286d40db68ec0ae SHA-1: a0aaabf2bcc4f78c27b888299dc75184b75b0d69 SHA-256: 00218dd0a2acdf74a8cdff745881d57ebd02f8c8fbd58e23c2cc457aca2cb41b
156 Risk Score

Malware Insights

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

The PDF document contains numerous external links, characteristic of a link farm or SEO spam, with one prominent URL leading to a suspicious domain. ClamAV and ML classifiers strongly indicate maliciousness, specifically flagging it as a phishing trojan. The embedded content, though heavily obfuscated, suggests an attempt to redirect users to malicious sites, likely for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://jottigo.ru/strik?utm_term=how+to+describe+a+sunset+metaphors PDF link annotation
    • https://xidumalebuwun.weebly.com/uploads/1/3/4/8/134894794/mudob-xezalatu-petokasabaru-jatujuvofavat.pdfIn PDF document text
    • https://fekugutupufug.weebly.com/uploads/1/3/4/8/134876907/jaxiwidulu.pdfIn PDF document text
    • http://azorocheat5.xyz/bib._dll_gratisiornq.pdfIn PDF document text
    • https://susemozud.weebly.com/uploads/1/3/2/8/132814624/puluz.pdfIn PDF document text
    • https://kaxapanokatonab.weebly.com/uploads/1/3/1/0/131070327/kepubagabaxevo.pdfIn PDF document text
    • https://sinekaku.weebly.com/uploads/1/3/5/9/135964305/dfb5f5.pdfIn PDF document text
    • https://siwevamad.weebly.com/uploads/1/3/1/8/131871433/sasexubolenorapep.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/3018050.pdfIn PDF document text
    • http://zasopawemumobaw.iblogger.org/taxiwixoworave.pdfIn PDF document text
    • https://rakiletapaleta.weebly.com/uploads/1/3/1/8/131856645/7253631dee20.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/turip/sheet_metal_hydroforming_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/air_new_zealand_email_address_format.pdfIn PDF document text
    • http://wevikokuzufos.epizy.com/verifying_trig_identities_equations.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/78492921878.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/81821020908.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE125 5476 bytes
SHA-256: 066fb5dd631c01d4aaaf339c90384b69052f9480b2a451ed80bd5a441b88f232
font_01_sfnt_off0000f39e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF39E 10156 bytes
SHA-256: b83019294164a97d2d36d7a45460468e223f980a9fa0ab524f422e7b9b448052

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