PDF malware analysis — malicious · aa83632c56bdc899

MALICIOUS

PDF

41.8 KB Created: 2020-10-29 13:54:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06

MD5: b5e4364d53c7c08234bb52cd0dbb87a9 SHA-1: 6500a146d054149e1df8f5d18d701804432429aa SHA-256: aa83632c56bdc89961b2ab25725ecaa38b179b4102a00dcf7817d4daaeebeaad

194 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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/wb?keyword=compress%20large%20pdf%20file%20online In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/wilugugo/amoebic_liver_abscess_treatment.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0480/7439/1709/files/romeo_and_juliet_play_book.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/836f8a5e-d5b6-4512-a2e0-bb761ae37a94/wugom.pdfIn PDF document text
- https://s3.amazonaws.com/gavexilatuvitaz/ziruwasiw.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f9814462-2202-4604-aa2f-c781e2ee2e6c/vapaxiledunapogisodebazum.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/0300/5086/files/pathogenic_and_clinical_microbiology_a_laboratory_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/7971/0905/files/4268226198.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1513/3605/files/saduduxinekuloxudanap.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/jurnal_penelitian_akuntansi_manajemen.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/0913/6024/files/tree_operations_in_python.pdfIn PDF document text
- https://s3.amazonaws.com/luramamelolem/the_tenant_of_wildfell_hall.pdfIn PDF document text
- https://s3.amazonaws.com/pazifetanegapu/vuwavixurot.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/statistical_quality_control_m_mahajan_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/1587/2927/files/oscar_2020_list.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ebc9c1f1-1335-43f9-8ee5-f6d35244dca9/votigi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/3648/9893/files/vakuxofuvusewenofumub.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0467/9955/2663/files/tuff_torq_k46_life_expectancy.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/209f401d-776a-468d-87cf-54a0a2036d89/albert_ellis_airport.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0480/4703/0436/files/bittorrent_pro_old_version_apk_download.pdfIn PDF document text
- https://s3.amazonaws.com/dudurat/stop_bang_assessment.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/00cec524-8ab9-479d-aade-e9eb06d5ac88/68657552628.pdfIn PDF document text
- https://s3.amazonaws.com/padadutiseni/52734646584.pdfIn PDF document text
- https://s3.amazonaws.com/henghuili-files2/rajurubibi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/000cd719-ecdf-4443-b935-2ab6a32fba99/tudijo.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_off000065fc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65FC	5268 bytes
SHA-256: `c9dab01eb98f761da7ce374369ebe798f0c9d1ad03141c484ad5450c702774e9`
`font_01_sfnt_off000077c9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x77C9	10084 bytes
SHA-256: `71a97dcd7d8a06acbdb91d93151d5515226a726972857a51f7e5387a88b14c3f`

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