Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d2e51499f5cf2da…

MALICIOUS

PDF

74.2 KB Created: 2020-12-22 16:41:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a7be004df85f9c21612cc3169467b486 SHA-1: b66a227d89c6f85799a6ed153acdaec7fa22f304 SHA-256: 5d2e51499f5cf2daeaaac2c6a349bb2b7ea88c841f69e602358a92e4e750e9dc
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with critical heuristics identifying it as a malicious redirector and part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded links likely lead to phishing sites or further malware downloads, aligning with a spearphishing attachment attack pattern.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/123?utm_term=ray+bradbury+quotes+about+summer In PDF document text
    • https://vulabomanuxuw.weebly.com/uploads/1/3/4/8/134857085/8e9f4859.pdfIn PDF document text
    • https://gurigibafex.weebly.com/uploads/1/3/0/7/130739571/dobogejawizil.pdfIn PDF document text
    • https://reropazorulofo.weebly.com/uploads/1/3/4/4/134437501/80aafffcaab276.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/ba468f9a-1fc2-4aac-a7bd-0382cfbe03e8/saraswati_vandana_lyrics_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70708068-cd39-4484-9aee-05ea6f8a43e1/goboxoziv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bf8c9e5-1932-4a3d-8bde-0c1dac6c71bf/92090616395.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77ac7169-bc87-4ffc-9c0d-04896c5aa87b/vekaku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/057021b1-45f7-4d07-a868-b02d46d87b44/liperinovow.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/allah_wallpaper_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba181904-fea5-46f3-9e85-bd7a737e6515/52800495359.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc17203e2fce462bc8fc7f8/t/5fc683e94e98326c02f42e7a/1606845418485/photoshop_background_images_psd_files.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/formule_de_politesse_en_anglais_traduction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e7e893d-ae96-4713-aa35-1f4da8521e5b/age_of_consent_dc.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_off0000d8d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D6 5040 bytes
SHA-256: 145f9d32a9838c6914821cfefb1dbd33435c6dda6e92454f266c2968e24da36b
font_01_sfnt_off0000ea00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA00 10628 bytes
SHA-256: d975ddcfbd4f9e5eafbdcae4b1b4e36cdf9c00f8cd22c621f9b20b75af0730e9
font_02_sfnt_off00010daf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DAF 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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