PDF malware analysis — malicious · 9d20741cf3f329a8

MALICIOUS

PDF

118.6 KB Created: 2020-10-26 14:50:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 721d843830f89a2104a5b117323a8035 SHA-1: 00b09d3ebc69019c92bf153675e81e8eb28e2910 SHA-256: 9d20741cf3f329a8a0ad3f32f384fbe18765808e684ff7676e15e5269f9f085e

174 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.ru'. The document body also contains this URL, suggesting an attempt to trick the user into visiting a site that likely hosts phishing content or further malware. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 5

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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.ru/pify?keyword=marketing+management+book+pdf+for+bba In PDF document text
- https://cdn-cms.f-static.net/uploads/4382780/normal_5f910dcc3f28d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375203/normal_5f91c954eefa6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373502/normal_5f8fb6c657e6b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405197/normal_5f93d08a3f7ee.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369336/normal_5f8f8982d001d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369518/normal_5f8baf6f22806.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365660/normal_5f87252592983.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://uploads.strikinglycdn.com/files/cde5aaf1-3233-4ae6-89e0-2bb209085dc5/18592012680.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9f66a96f-822c-4b4a-8585-316cbf5c51c1/zazeroxelaruxegi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ea2412fa-84a0-4380-be31-3b62f75754e2/xuzegadibixegow.pdfIn PDF document text
- https://s3.amazonaws.com/kavitokolezub/18134953430.pdfIn PDF document text
- https://s3.amazonaws.com/jakujakula/94686199398.pdfIn PDF document text
- https://s3.amazonaws.com/waxapoz/16469666115.pdfIn PDF document text
- https://s3.amazonaws.com/jijumupade/gst_tax_in_india.pdfIn PDF document text
- https://s3.amazonaws.com/tevigotu/bohemian_rhapsody_piano_sheet_music_easy_free.pdfIn PDF document text
- https://s3.amazonaws.com/begijufadi/subsistence_economy.pdfIn PDF document text
- https://s3.amazonaws.com/badodemebo/62612443391.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/4328/5923/files/tacticool_5v5_shooter_mod_apk_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0476/7481/8726/files/97188419351.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5804/4828/files/operating_room_standards.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5294/9913/files/motorola_ls2208_programming_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0504/5721/5166/files/carillas_de_resina_inyectada.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_off000187fb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x187FB	5148 bytes
SHA-256: `c28b8576d7f1149bc4a9bd6bbc709bc88966b5609becef88c3bebfba2ec170de`
`font_01_sfnt_off00019962.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x19962	10932 bytes
SHA-256: `cc4dbb2f222f8609dc89d9a56d6f03bf15f742bbcda32948a660b44b101fb64f`
`font_02_sfnt_off0001be1c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1BE1C	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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