PDF malware analysis — malicious · 81ab586b62711f7c

MALICIOUS

PDF

74.5 KB Created: 2021-01-05 21:44:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 48c85cd36127c6b4e2ed93d09129374d SHA-1: 73122100cb940b6208934cd2584a486549a57cf2 SHA-256: 81ab586b62711f7ca5ad239d92ca145a6f1fbf694ea1dfe6309c998f88355465

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing a link to a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is the primary indicator of compromise, likely leading to a phishing page or malware download.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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/aws?utm_term=wedding+shower+sheet+cake+pictures
- https://cdn-cms.f-static.net/uploads/4382621/normal_5f8c2baabd96c.pdf
- https://xuwosanilenerev.weebly.com/uploads/1/3/4/9/134900173/3932594.pdf
- https://cdn-cms.f-static.net/uploads/4369771/normal_5f96f279b0709.pdf
- https://cdn-cms.f-static.net/uploads/4366339/normal_5f8da13c32e32.pdf
- https://simokenuma.weebly.com/uploads/1/3/5/3/135311421/3309f.pdf
- https://wolofineso.weebly.com/uploads/1/3/4/5/134598063/naxow-wujofow-bevonapi.pdf
- https://xagapetudiza.weebly.com/uploads/1/3/4/6/134686513/jifewuzetujubiwapiga.pdf
- https://xameramavojipav.weebly.com/uploads/1/3/4/2/134265998/863367.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://s3.amazonaws.com/woxewiwupir/25492106261.pdf
- https://s3.amazonaws.com/vedexajawo/81485879322.pdf
- https://s3.amazonaws.com/sizabo/podewewupi.pdf
- https://s3.amazonaws.com/vuxalirudidel/mit_guide_to_lock_picking.pdf
- https://s3.amazonaws.com/geraromu/tv9_marathi_news_reporter.pdf
- https://s3.amazonaws.com/lodunixodetum/life_cycle_assessment.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000da0e.bin` `66e2eb0b4de603c13c1b923cd9e86168a1b579c57aafdf55c6b6ce594647f3a9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDA0E	5352 bytes
`font_01_sfnt_off0000ec4e.bin` `7ba9ed213de0555b78ce087837efd88e9b3375ef992b00f2c8637597d2cbb7ed`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC4E	10288 bytes
`font_02_sfnt_off00010f16.bin` `7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10F16	4324 bytes

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