Malicious PDF — malware analysis report

Static analysis result for SHA-256 32b0e5b651a7ccb6…

MALICIOUS

PDF

78.6 KB Created: 2020-11-14 19:39:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15f51525ab778e581e7cdbe75a0d1f7c SHA-1: 91e3425461e5b40b52e52e2de73edd1f7134b8ec SHA-256: 32b0e5b651a7ccb631bc58050a94f65783c632e2be82c28aeb43c0a7d5ecdd7f
156 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many pointing to Weebly-hosted PDF files, suggesting a link farm or phishing attempt. The presence of the ClamAV detection 'Pdf.Phishing.Trojan' and the ML classifier output strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to 'Adobe Photoshop free apkpure', reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/aws?utm_term=adobe+photoshop+free++apkpure
    • https://wuwixebesa.weebly.com/uploads/1/3/4/5/134506807/fenikalumej.pdf
    • https://rogenogenitel.weebly.com/uploads/1/3/4/3/134316557/vanetamarij.pdf
    • https://mosutija.weebly.com/uploads/1/3/4/5/134502389/tabojotazemopepixig.pdf
    • https://savakorudefipe.weebly.com/uploads/1/3/2/3/132303238/rojipiwuzoma.pdf
    • https://duroxogudoli.weebly.com/uploads/1/3/4/3/134318703/weditonizepemu.pdf
    • https://debaduvevuw.weebly.com/uploads/1/3/4/3/134383420/rejojubidakejizit.pdf
    • https://xojoguxivizu.weebly.com/uploads/1/3/4/0/134096407/nogirexilasipiv_kofozewuvon_jadan.pdf
    • https://cdn-cms.f-static.net/uploads/4383149/normal_5f97c56bb8b58.pdf
    • https://durabaseduxoj.weebly.com/uploads/1/3/4/2/134235759/6472914.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bajuse/gapoximimawoda.pdf
    • https://s3.amazonaws.com/wonoti/canciones_y_acordes_de_guitarra.pdf
    • https://s3.amazonaws.com/bawalidamovidud/zibadelizuwefopinowawawe.pdf
    • https://s3.amazonaws.com/bokelur/progressive_era_banking_reform.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f691.bin
fee19b820306188a8e1674a64d73ef509714d5b4d96f7000da4ef67ac7075eb6
pdf-font-stream PDF embedded font (sfnt) at offset 0xF691 5288 bytes
font_01_sfnt_off00010885.bin
2d954186a82b3ddccd3d35ecad5daebf113928dbe8b0d8494b603c9baffaebf2
pdf-font-stream PDF embedded font (sfnt) at offset 0x10885 10872 bytes