Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dfaae49a4eaa47b…

MALICIOUS

PDF

60.3 KB Created: 2020-11-19 10:23:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0c2ac1e22b21e65eebee32655cdae443 SHA-1: 18988639eab74470a00f721bb138dd9d42ffbd84 SHA-256: 1dfaae49a4eaa47b971f4542d35c66ce381a95664a452c5d17861f9a63d92a93
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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.
  • 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://cctraff.ru/aws?utm_term=acca+f5+lsbf+class+notes+pdf In PDF document text
    • https://bigamurutixigi.weebly.com/uploads/1/3/4/4/134481126/73c82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368475/normal_5f8a384896b41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382407/normal_5f943e46a9eb8.pdfIn PDF document text
    • https://xiwujanif.weebly.com/uploads/1/3/4/7/134705994/debimuwumosupem.pdfIn PDF document text
    • https://kufazijofiw.weebly.com/uploads/1/3/0/7/130776126/679db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378160/normal_5f9a6190a61aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366344/normal_5f8a838e221e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368243/normal_5f92c4c3af7b6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa3fa22f-8b53-4103-866a-6b2f4cf22799/fuji_raw_converter_ex_2.0_download.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/indesign_free_flyer_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/lupotisuminejopipidinemi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c3197f7-3b11-4456-aa10-0b7d7361ba5e/zigekogivojavuzexeveweri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22b7a32f-b884-4e59-ba4e-b3da20e627bd/81160489611.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/5936052985.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/piwesajovemifuferuneku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/541d6949-4174-402a-bda1-3470b79ad66b/fexunelarivawame.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/maytag_bravos_xl_washer_manual_mvwb835dw4.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_off0000b09e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB09E 5304 bytes
SHA-256: 28065f0c0ea7e8b41c497f94136de997b2f142c4c5ab5cb5995a7385fcdde701
font_01_sfnt_off0000c2c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C5 9796 bytes
SHA-256: 8ef7e421b0c485a8be0d38245e7c347d70df6ab25da0c7a78adcdf7140444f30

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