PDF malware analysis — malicious · 7ee93093e2c174c0

MALICIOUS

PDF

51.1 KB Created: 2020-10-29 12:22:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 4105e454f056f22d22696e7bf3b36a66 SHA-1: 36d7e7abdb742b7d48ffd83847093929629c95a4 SHA-256: 7ee93093e2c174c034006beef4e0689db589c03dd6a430ca8c0cff665e5ec34c

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of embedded links, with one identified as a malicious redirector. The ML classifier also flagged this PDF as malicious. The embedded links likely serve to direct users to malicious sites or to manipulate search engine results, a common tactic for phishing or malware distribution. No scripts were extracted, but the presence of numerous links suggests an attempt to lead the user to a malicious second stage.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.
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.
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://ttraff.me/123?keyword=find+divergence+of+vector+field+calculator In PDF document text
- https://cdn-cms.f-static.net/uploads/4382643/normal_5f950b635a83f.pdfIn PDF document text
- https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/2945446.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366376/normal_5f8df32f4f1c8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366004/normal_5f94609f2d2e0.pdfIn PDF document text
- https://mazogerivajusem.weebly.com/uploads/1/3/4/3/134341978/laxufenib_webatakenilufo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366947/normal_5f88f5786c0a2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378386/normal_5f9a5f2b8ed3f.pdfIn PDF document text
- https://gagumosesixibo.weebly.com/uploads/1/3/4/0/134018544/tofem.pdfIn PDF document text
- https://lexizade.weebly.com/uploads/1/3/4/3/134368494/zovoxa.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://cdn.shopify.com/s/files/1/0430/7487/9642/files/bunogigotibefipugasubex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/2836/3939/files/persuasion_jane_austen_gutenberg.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/7831/2644/files/wuxewuriloj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/2147/6255/files/dilaf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/5327/1208/files/8_comma_rules_answers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0266/8039/3915/files/mackie_402vlz4_mixer_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3269/0339/files/93157990020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0492/9837/4815/files/wumarapes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/6304/9879/files/28313553232.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/8896/2219/files/resistencia_de_materiales_villarreal_castro.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/3730/2170/files/healthy_working_environment.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/5229/3017/files/gogupuviximoketokupo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0266/7993/5159/files/cjbat_study_guide_book.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3162/5882/files/gorebaxurebixedati.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0480/1042/8575/files/materi_kedudukan_dan_fungsi_pancasila.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/0709/6986/files/45752608452.pdfIn 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_off0000785c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x785C	4908 bytes
SHA-256: `ec88dd7e7aabd502ed27c33e868d3672a14540274f83f4289576814147241b46`
`font_01_sfnt_off00008917.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8917	11716 bytes
SHA-256: `c19fadf1d10ca0efd6b271384383fcd227406c24dcd657e7ab034c6ab33d73a5`
`font_02_sfnt_off0000b058.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB058	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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