Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbe8ee04b3b90bc8…

MALICIOUS

PDF

68.3 KB Created: 2020-11-10 23:02:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bae4e7fb360b8cdbec13d9874cc37924 SHA-1: d8dee92a0582415da04e825c7f84c7f0efe03060 SHA-256: bbe8ee04b3b90bc8717de0d1e2722ff28e9ddcf1cb1e582dc77c582bdd9010be
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/123?keyword=face+guide+new+leaf PDF link annotation
    • https://zinawadasug.weebly.com/uploads/1/3/4/3/134312837/duxokafaworozawupa.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/bixaki-zozuvo-rarejipoxi.pdfIn PDF document text
    • https://nudopimiga.weebly.com/uploads/1/3/1/0/131070212/vefevudosowaxasaguk.pdfIn PDF document text
    • https://savakorudefipe.weebly.com/uploads/1/3/2/3/132303238/jezeg.pdfIn PDF document text
    • https://xukutejupu.weebly.com/uploads/1/3/4/4/134487517/jojusetelakag.pdfIn PDF document text
    • https://dibekepoxifepef.weebly.com/uploads/1/3/4/5/134587143/silatakef_lexavovigebaxo.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/6835051.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/kiwopusafize/xapozomufowuvoxaruj.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/51653030663.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/54004386807.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e34eaaeb-d0d1-428f-8e90-faaed43b077b/9292519297.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b762f220-5fff-49af-8de8-42a85c08b94e/ridos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9843bdeb-0ca6-4a1d-9a30-03d0f6dbc787/93498419918.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/eclipse_guide_gloomhaven.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7EA 4960 bytes
SHA-256: 560538ae01eaae614f35725cbedddb26e651e81bdfae46ae42503901e11a626c
font_01_sfnt_off0000d8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8ED 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000e17a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17A 10228 bytes
SHA-256: 89e1d893a5fb8207485fa1ace326c13d4c0e905e3c43637b94a4410a94f877c8

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