Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebeaa97a5010026c…

MALICIOUS

PDF

312.0 KB Created: 2021-03-18 16:19:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aeec32d3cf14e0b87c5fdf33b9c1ea6f SHA-1: d51120d9a566a1c4b615b0b12a07d38fdf82b7c7 SHA-256: ebeaa97a5010026c2d6b97745fea27ce3c47d8d08d5a47d336c4e5fa02a256bf
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ClamAV detection and ML classifier strongly indicate maliciousness. The document body, though heavily obfuscated, suggests a lure related to a 'Honda civic service manual pdf', which is likely a pretext to drive the user to the malicious URL for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 4

  • 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://kuzutuzo.ru/strik?utm_term=honda+civic+service+manual+pdf
    • https://cdn-cms.f-static.net/uploads/4504641/normal_602ab4184208e.pdf
    • https://sixojatem.weebly.com/uploads/1/3/4/6/134650300/54690.pdf
    • https://lupipoga.weebly.com/uploads/1/3/4/4/134402738/banupigoj.pdf
    • https://static.s123-cdn-static.com/uploads/4369651/normal_5ffbc44d874cf.pdf
    • https://vatifogogunubit.weebly.com/uploads/1/3/4/7/134725392/2676008.pdf
    • https://novizatedorik.weebly.com/uploads/1/3/6/0/136095988/7542651.pdf
    • https://vunozeguwogiwe.weebly.com/uploads/1/3/4/7/134745761/nuraxinejupa_wipamukaben.pdf
    • https://cdn-cms.f-static.net/uploads/4466673/normal_6016480f771b7.pdf
    • https://cdn-cms.f-static.net/uploads/4423171/normal_602e54a164f4a.pdf
    • https://munerojepoges.weebly.com/uploads/1/3/4/0/134042508/82395.pdf
    • https://wemupubipu.weebly.com/uploads/1/3/5/3/135331653/debaf_fojumasun_kafimabeki.pdf
    • https://cdn-cms.f-static.net/uploads/4471682/normal_601b052b1dcfe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://7ae774ad-b64d-4473-a0b1-aa0db1e39e83.filesusr.com/ugd/3e7897_ed59aff75e8e44ca9721034700a9b49c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/6b622cd2-15a4-4bcb-a64c-6bbff7456f65/vozijir.pdf
    • https://36071b1a-d853-4ad1-bccf-0ed894d94038.filesusr.com/ugd/906e9f_16236805d9d14ae3a5589907b65812ce.pdf?index=true
    • https://uploads.strikinglycdn.com/files/9039ee79-9759-4d97-bca8-3556d6a10d21/jupuwibozep.pdf
    • https://uploads.strikinglycdn.com/files/7e07b77c-2c44-46e1-90d0-03a21c5c5b82/84638212418.pdf
    • https://uploads.strikinglycdn.com/files/867a45fe-80ac-4b78-acee-d74cc533b8a6/rudavedusa.pdf
    • https://uploads.strikinglycdn.com/files/36d8ac36-19ef-4c44-b73f-027fcf7e46c1/2012_highlander_oil_capacity.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_off00049132.bin
df6af59a15130be91249b84d0911ab76a44059568b68c5991e9ddb5bdfa91f69
pdf-font-stream PDF embedded font (sfnt) at offset 0x49132 5324 bytes
font_01_sfnt_off0004a33a.bin
67ef600c4f85b5e106ab69eed5e69c1215e6e4c5bec721b0409317bba1b6afd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A33A 13044 bytes