Malicious PDF — malware analysis report

Static analysis result for SHA-256 18e2ed9844093c63…

MALICIOUS

PDF

67.2 KB Created: 2021-01-04 11:06:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 38da8cbe4c05602cd109bef1a5cdfa31 SHA-1: e7b584ed45cbd997c5f5b8d950b073a2886306b3 SHA-256: 18e2ed9844093c63dfdbca5dee89c9439bce0f60c77e1c5e979819ee13eae14b
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains a large number of external links, many pointing to Weebly-hosted PDFs, which is indicative of a link farm used for phishing or malware distribution. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and extensive external linking are common tactics for initial access and redirection to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/aws?utm_term=festool+router+template+guide PDF link annotation
    • https://varalege.weebly.com/uploads/1/3/0/7/130738576/3049c.pdfIn PDF document text
    • https://mabamigetope.weebly.com/uploads/1/3/4/4/134493328/7a1d42c1ee06f.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwufupi/hjrEihF/hide_all_file_extensions_mac.pdfIn PDF document text
    • https://lemefiware.weebly.com/uploads/1/3/4/0/134017231/bodefemujufewa.pdfIn PDF document text
    • https://vomalutexoj.weebly.com/uploads/1/3/1/8/131871655/vogunewemo_nitikijemor.pdfIn PDF document text
    • https://kewisivi.weebly.com/uploads/1/3/2/6/132681156/budiregegujodagot.pdfIn PDF document text
    • https://teregurejojexol.weebly.com/uploads/1/3/4/8/134879353/lipofafixiri.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/fumiposamisur/cab_full_form_in_nrc.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/32965472967.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/gasakaxosomi.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/bardwell_fc_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0eed8083-1b2a-4fa8-ad86-47f78624e1d6/zikotemutegugig.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/living_history_hillary_clinton.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_off0000c7a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A0 5236 bytes
SHA-256: 2dddfc8abd1bb7dd39df612d2ce0d43a21d4b5f84c7f304e2d35cee62ba6995c
font_01_sfnt_off0000d952.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD952 10848 bytes
SHA-256: 11404d2f7dd2a9ace1f3377b848effe01a4f75deefcdabdb6b75e9dbe74d0938

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