PDF malware analysis — malicious · ffd12ac5e14e0656

MALICIOUS

PDF

89.8 KB Created: 2021-03-20 10:19:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22

MD5: 17200696f53bdf1eeafa0c344e7aa7a7 SHA-1: 710c92792390eed93d1f2311f1b9821a74097187 SHA-256: ffd12ac5e14e0656688a60c0771cbd6ad262d55c48329b832bfeb63ad382cae3

164 Risk Score

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://fokemale.ru/123?utm_term=java+jdk+1.+8.+0_131 PDF link annotation
- https://static.s123-cdn-static.com/uploads/4412158/normal_60071d9164175.pdfIn PDF document text
- http://pebogoginugi.iblogger.org/what_order_to_play_the_sao_games.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4366389/normal_5ffddf1c3df25.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4456391/normal_6052d64ce32cb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4458854/normal_603c1c97a0ad0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388413/normal_6043569f244c3.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://fe92b815-f0fe-4223-924b-659339f44b90.filesusr.com/ugd/8f64fc_2200b93fdca949ad94e3a20b429223a2.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/pobixedele/mark_sheet_10_class_2018_fbise.pdfIn PDF document text
- https://s3.amazonaws.com/pukiza/nexutekika.pdfIn PDF document text
- https://6c036dbd-b327-4678-b778-de8a2ee7bb50.filesusr.com/ugd/ed64d2_e77ce3a164434144899df27c3b7d34df.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/zumomasugipeno/erie_canal_mule_crossword_answer.pdfIn PDF document text
- https://6ae5a9c1-8526-45f7-b068-03ddf2465b28.filesusr.com/ugd/87f732_ce08c124908e420a83058a04693ac938.pdf?index=trueIn PDF document text
- https://650c977b-0274-48a2-8498-43c0efc39f4e.filesusr.com/ugd/dbad32_cd278337ea804fd3a00be0debc7996a7.pdf?index=trueIn PDF document text
- https://37459de8-d961-4a2a-897a-801dad55dcfc.filesusr.com/ugd/1395e2_0eedb576046f482eac68b27934703c94.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/panalipolifod/snackbar_error_android_studio.pdfIn PDF document text
- https://s3.amazonaws.com/lorugipopuxe/ar_15_magazine_release_replacement.pdfIn PDF document text
- https://s3.amazonaws.com/nedijowewoded/vision_ias_prelims_2019_answer_key.pdfIn PDF document text
- https://s3.amazonaws.com/remeranexe/48946672371.pdfIn PDF document text
- http://diturasenupope.epizy.com/avery_5260_template_for_word.pdfIn PDF document text
- https://4590046d-f0a9-4171-b8a0-56ff8c1fe63c.filesusr.com/ugd/0bfb20_6f9d3a6e8c034e5aa0b915bdaf68c595.pdf?index=trueIn PDF document text
- https://8137cd1e-393d-4948-8193-eca935452849.filesusr.com/ugd/756799_74fffd2821ea48fe859bab35e657b9d2.pdf?index=trueIn PDF document text
- https://0f926834-650c-4d5a-b53c-ad60ae412ccc.filesusr.com/ugd/6a44d8_d6b2239878224539801c86b2efd465bd.pdf?index=trueIn 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.

Filename	Kind	Source	Size
`font_00_sfnt_off00011569.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11569	4644 bytes
SHA-256: `89dc3f44d39fee8607a801d005ed4ba8dfca0d86d55b58786a01ccbdf325cc24`
`font_01_sfnt_off00012541.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12541	11244 bytes
SHA-256: `68a7878133bc295f0d23b4c66e7dbb84b402519983f4871758a36dbafc4ed697`
`font_02_sfnt_off00014bd4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14BD4	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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