PDF malware analysis — malicious · 59ce2dd5c23c8af8

MALICIOUS

PDF

51.9 KB Created: 2020-10-29 05:36:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 963b030f94960e6043d6f5ec79e207e1 SHA-1: d9f094818b4933be7bfac8a6265593004547c449 SHA-256: 59ce2dd5c23c8af8370cb81f594712c98afc7a263fb1a4ee425063918edca580

162 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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.cc/123?keyword=video+game+ringtones+mp3 In 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://cdn.shopify.com/s/files/1/0430/6213/2897/files/metode_purposive_random_sampling.pdfIn PDF document text
- https://s3.amazonaws.com/susopuzupure/development_of_achievement_motivation.pdfIn PDF document text
- https://s3.amazonaws.com/nalifij/didujewasafeberalonuvo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2e345417-af00-4694-8573-69872d6cbfe1/genupunakimo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6728/5410/files/animal_flash_cards_app.pdfIn PDF document text
- https://s3.amazonaws.com/gozilum/zotagose.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0504/5721/5166/files/chicken_invaders_4_hack_apk.pdfIn PDF document text
- https://s3.amazonaws.com/remeranexe/practice_test_7_reading_answers.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e647b27c-063d-4a6e-8b1a-1e3e4581635e/44957232378.pdfIn PDF document text
- https://s3.amazonaws.com/lumixi/bbc_scottish_parliament_elections_2016.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3f035b45-30c9-4a4e-a8f4-04eeb11f7048/tafupunagebeb.pdfIn PDF document text
- https://s3.amazonaws.com/ropuba/49713733127.pdfIn PDF document text
- https://s3.amazonaws.com/zakunafu/understanding_culture_society_and_politics_rex.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6a8f57ac-7e24-4970-8ce4-9aa40b208036/big_ideas_math_advanced_1.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dead868c-dbcd-4ed3-874d-091569ff353c/bozojememubu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5802/6903/files/pokemon_go_trading_iv_reroll_guide_2020.pdfIn PDF document text
- https://s3.amazonaws.com/vasagesorajirem/78340249139.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0478/3567/6831/files/weakness_of_articles_of_confederation.pdfIn PDF document text
- https://s3.amazonaws.com/giwurode/animorphs_book_8.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/938a27f6-d29a-4b93-8d7a-09ec9c4d9667/xiduzisuwusisul.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_off00007e7f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E7F	5164 bytes
SHA-256: `169da4b9827f49a34ed4a283d2c062d50595ccd341b3b43cdd82fd97bc374e1d`
`font_01_sfnt_off00008ff9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FF9	10476 bytes
SHA-256: `5f9eaad27187fca1264c9b275bf26d7398c9e88ce588c6a6f3aaba35bad92cda`
`font_02_sfnt_off0000b3e2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB3E2	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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