PDF malware analysis — malicious · 7fb06da1fe816592

MALICIOUS

PDF

40.7 KB Created: 2020-08-18 14:48:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4add4484beb4a0610b58283219aa6fbf SHA-1: 60133619ce5f904cf6964b2f9cdf8d60ab4c716d SHA-256: 7fb06da1fe816592111bcb4f3168e2a8a64dd4960d9452b330a7927f82b113a6

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a redirector service, which is a common tactic for phishing and malware distribution. The embedded link farm suggests an attempt to generate traffic or SEO manipulation, leading to the malicious redirector. While no scripts were directly extracted, the PDF structure and heuristics indicate malicious intent to redirect users to potentially harmful content.

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.com/pify?keyword=space+wallpaper+high+resolution+free
- http://pakuk.stmaryssilverstream.org/uploads/1/3/1/8/131871674/lamuxakofov-nopetuwu-zaxojinulolo-zifitadipiluvi.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0429/2821/0073/files/pofafimine.pdf
- https://cdn.shopify.com/s/files/1/0434/1340/5850/files/bakitejewasuputodidimapa.pdf
- https://cdn.shopify.com/s/files/1/0435/0204/3288/files/velevadugovibixotavag.pdf
- https://cdn.shopify.com/s/files/1/0437/7231/3749/files/wopudemum.pdf
- https://cdn.shopify.com/s/files/1/0431/7878/6965/files/rusuguzofeneviziw.pdf
- https://cdn.shopify.com/s/files/1/0431/6761/3089/files/criminal_justice_system_in_the_philippines_reviewer.pdf
- https://cdn.shopify.com/s/files/1/0432/8770/7812/files/12867395725.pdf
- https://cdn.shopify.com/s/files/1/0447/5761/4741/files/fulazuwovededasuzepipu.pdf
- https://cdn.shopify.com/s/files/1/0437/9394/0641/files/4458837272.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_off00006125.bin` `075703f765160418686455b9185c62613775bfb9c66b518c5dd8fbd1820f630d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6125	5472 bytes
`font_01_sfnt_off000073cc.bin` `a6399c7b61942af1e0572e075bb522c697994b7b8641ccc4bd95470e564c043a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73CC	10100 bytes

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