PDF malware analysis — malicious · 087ae9de8e53b66e

MALICIOUS

PDF

41.7 KB Created: 2020-11-05 02:08:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 663cee9cada5fbd5758331a0e46216dd SHA-1: 1b447c9d06777e4d5c4a226492dcb9557de0673f SHA-256: 087ae9de8e53b66e2fd90df976f285eeb9bb65d59b877da21610e019a911a816

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. Although no scripts were explicitly extracted, the PDF structure and embedded link suggest a malicious intent to redirect users to potentially malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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://ggtraff.ru/123?keyword=ap+world+history+unit+5+practice+test
- https://jumabesabixoduz.weebly.com/uploads/1/3/4/3/134368642/1fa3ecde8385428.pdf
- https://cdn-cms.f-static.net/uploads/4423133/normal_5f971c7273946.pdf
- https://jugoruzaja.weebly.com/uploads/1/3/1/4/131407370/7523295.pdf
- https://cdn-cms.f-static.net/uploads/4413696/normal_5f9512727e892.pdf
- https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/kifurilaxajap_vazuzoforir.pdf
- https://fimozafovobas.weebly.com/uploads/1/3/2/7/132741130/9c0bacde9fa8.pdf
- https://cdn-cms.f-static.net/uploads/4372073/normal_5f96a13ceaae8.pdf
- https://kidogotetivi.weebly.com/uploads/1/3/4/3/134375399/4c8546bd.pdf
- https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/toniruzalipolazowepa.pdf
- https://cdn-cms.f-static.net/uploads/4378153/normal_5f8de05bb8d55.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/lijopavexanuse/42178012638.pdf
- https://s3.amazonaws.com/sazariwapa/kuxobigidenetiketasedum.pdf
- https://s3.amazonaws.com/zuxime/hero_bike_parts_price_list.pdf
- https://s3.amazonaws.com/sodoxi/81729131362.pdf
- https://s3.amazonaws.com/pizexopenaxu/rexudunafiwufewakiduzujap.pdf
- https://s3.amazonaws.com/henghuili-files/asme_section_ix_2019.pdf
- https://s3.amazonaws.com/lopadivupudexa/articulos_sobre_energias_renovables.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000062e8.bin` `6c51094c882c3359449d8551ae8a47d0864c74c7895148698295806fb6c36187`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62E8	5468 bytes
`font_01_sfnt_off00007590.bin` `2a3dae6f2c6eb62b4e986596d625a4643085798bd190361780f3397df2dacec6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7590	10668 bytes

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