PDF malware analysis — malicious · d1f2a3b69e4f9c12

MALICIOUS

PDF

38.4 KB Created: 2020-10-28 07:22:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: cc2af04d12b83f9bf5d181e22f0c3dbc SHA-1: 171a3bf38d54744c6e1cda7734383df0ff95ea23 SHA-256: d1f2a3b69e4f9c128c6cd9fbe2c5fb3332a476b41e5abb69d4cb50933c8f03a3

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded links that redirect to malicious infrastructure, specifically a URL containing a product keyword. The ML classifier strongly indicated maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a link to known malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick the user into visiting a malicious site, likely for phishing or malware distribution.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://cctraff.ru/strik?keyword=cuisinart+smart+stick+hand+blender+with+chopper In PDF document text
- https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/fesixukorupu.pdfIn PDF document text
- https://zixotojene.weebly.com/uploads/1/3/4/3/134315054/vorebajapaxel.pdfIn PDF document text
- https://lagafuxomip.weebly.com/uploads/1/3/4/3/134347440/wakagiruzozixixofosu.pdfIn PDF document text
- https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/juvuto_jefesarojajaluw_wevar_jorivukak.pdfIn PDF document text
- https://pojetepanale.weebly.com/uploads/1/3/4/3/134361345/ratedid-maveva.pdfIn PDF document text
- https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/rilik-guwuj-rexosigevipu-mobukumerus.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4376866/normal_5f8f2c8e9f290.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381320/normal_5f907bb05ca8b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369671/normal_5f950176837ae.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366357/normal_5f8b487fdde56.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/bupijila/social_media_strategy_2018.pdfIn PDF document text
- https://s3.amazonaws.com/wuzalugiseto/tugejaz.pdfIn PDF document text
- https://s3.amazonaws.com/susopuzupure/pivoxizewan.pdfIn PDF document text
- https://s3.amazonaws.com/zijivevip/95795337757.pdfIn PDF document text
- https://s3.amazonaws.com/wemupajese/1451686335.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/270f5ca5-7cae-49a7-b99e-3986d56b1f69/the_song_of_achilles_ebook.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a1a327b0-234a-43d9-bd78-206d13df5954/musculos_que_intervienen_en_la_marcha.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f720da1b-b7bb-4b99-ad13-e26fbef3aa6b/labexunoxasovabubuj.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/273e2904-2ac3-4239-ad44-ee3f96472308/12743097192.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ba851c2b-36e0-4be4-a365-453f648d0396/vuvesudoli.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c34ea90f-dc88-4ea0-9ac0-ecd75f4d36c3/34900907335.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/71c259e2-22b2-405d-9678-fbb51953dbd2/20394968326.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000055d1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x55D1	5512 bytes
SHA-256: `fd3bae9365ba8e523b017c260dbf5d978ad4148a97dc6f89014e1115683cefb0`
`font_01_sfnt_off00006865.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6865	9940 bytes
SHA-256: `c2d4740a1763467feee9bc7849ba5a245439ecb19c9b7ecd1c6a3b3e50301410`

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