PDF malware analysis — malicious · 004c52eea018a4c8

MALICIOUS

PDF

48.0 KB Created: 2020-10-28 03:39:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 8774c029661b0de53ec50214d7c032fb SHA-1: 7559d2762b51948524fda6de0b43684c75f5c82e SHA-256: 004c52eea018a4c860b3affdba3cb80ced09306e6e7f5f26ef39ead658267690

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/123?keyword=patagonia+powder+bowl+jacket+sizing'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are benign Shopify links but likely serve to obscure the malicious one. The ML classifier strongly indicates maliciousness. No scripts were extracted, but the primary attack vector appears to be directing users to malicious infrastructure.

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.ru/123?keyword=patagonia+powder+bowl+jacket+sizing In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5820/0730/files/pearl_jam_stickman_fabric.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/0436/1366/files/97112232148.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/9958/5696/files/56792854205.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4872/9766/files/wastewater_engineering_treatment_and_resource_recovery_4th_edition_download.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b8294c34-7f44-46e8-98bb-d0837ec8bc79/33547004749.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/de3b171c-bed6-4d6a-9b02-74a2e7fe0563/germanium_diode_smd_datasheet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fb231e11-828a-4ec6-84c6-66cb9731f20f/vipugi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f183b905-2719-42af-a0c3-558760d7d346/56588046701.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/02298bfb-9733-4180-ab54-f9e713d5e1fc/rijujinalizudizibaf.pdfIn PDF document text
- https://s3.amazonaws.com/bikikanafopavu/10th_new_syllabus_social_science_book_volume_2.pdfIn PDF document text
- https://s3.amazonaws.com/zerejibixupav/building_maintenance_plan.pdfIn PDF document text
- https://s3.amazonaws.com/divelatoxa/fundamentals_of_computer_in_telugu.pdfIn PDF document text
- https://s3.amazonaws.com/rimejiguvif/sesotidexoxupiz.pdfIn PDF document text
- https://s3.amazonaws.com/mexavofezoxi/99550830842.pdfIn PDF document text
- https://s3.amazonaws.com/sabobenuwe/timipuzo.pdfIn PDF document text
- https://s3.amazonaws.com/dazinibonofobi/74514303347.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7f28b744-824c-4f32-9687-f952cff898b3/semuz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/10ffd643-f27b-4259-9d44-b3c66084b42e/xikil.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7c61edae-01b0-4128-b87b-522b2d6f08b0/modern_physical_organic_chemistry_anslyn_free_download.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ab7a36ca-23d0-44f0-b936-fe54dfd34366/kilabusizafi.pdfIn PDF document text
- https://s3.amazonaws.com/remufuzu/protein_synthesis_steps.pdfIn PDF document text
- https://s3.amazonaws.com/pivetuzadujo/jiborozekol.pdfIn PDF document text
- https://s3.amazonaws.com/kavitokolezub/pathology_of_cardiovascular_disease.pdfIn PDF document text
- https://s3.amazonaws.com/zasepo/cabotage_laws_of_the_world.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_off0000770c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x770C	5664 bytes
SHA-256: `4c26dfa3e9d4746d34777bacbc5ddf3460a7451ac461fc376732e8dae7b7440c`
`font_01_sfnt_off00008a6d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A6D	11236 bytes
SHA-256: `d932749b0957cc8869472f737ed62d23c016c98200d01656d579ef9dd3ba89b0`

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