PDF malware analysis — malicious · 066fea781ea63047

MALICIOUS

PDF

68.2 KB Created: 2020-10-26 17:41:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: a500e70a8afd0b4b977394348d8962c2 SHA-1: fe4926b44ac039f5c5017a6b6b225d3588879a26 SHA-256: 066fea781ea6304738721a7bdcb54444bd42b5cda25912a4d5e0df7045720fa0

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm of 30 external PDF links, with the primary link directing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://gettraff.ru/aws?keyword=trumpet+jazz+music+pdf', suggesting a lure to disguise malicious activity. The ML classifier also strongly indicated maliciousness.

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://gettraff.ru/aws?keyword=trumpet+jazz+music+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4370263/normal_5f8bfde992c47.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382631/normal_5f93238c7a6d4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365540/normal_5f8bedda88af6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385004/normal_5f8ebdc0d6158.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413016/normal_5f9530a32a66c.pdfIn PDF document text
- http://www.opentle.orgIn 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/1/0497/7888/4759/files/y2mate_mp3_download_apk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/8382/4821/files/71030376671.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0494/0650/9212/files/fifa_mobile_2020_apk_pure.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/2893/8406/files/libro_yurupary_completo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/2094/9403/files/lenarigewezoxenebolojalen.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/7201/0389/files/arctic_air_freezer_af49_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f434aabc-e5f0-4edd-9791-d43edbd9bb3f/dixelalejikitusedaw.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e96570b4-5f5a-4d78-ba44-4dd52e8854be/sportcraft_ping_pong_table_assembly.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d6b5ccb2-bea8-4630-8727-516e8833eee0/27166570144.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a1f37747-af94-47bc-a349-162dbb3fd79c/bet_verizon_fios.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/2324/4705/files/wezevofum.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/2935/5432/files/bose_sounddock_series_1.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/7238/1637/files/penyebab_cerebral_palsy.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/7528/0306/files/marvel_avengers_the_mobile_game_apk_download.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dd8b8fc0-bde6-46de-a693-5208451ed113/21070621392.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6dfe8ea4-547e-465e-a9a3-5b690cf3f339/csgo_fps_settings.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/99696871-adfa-44a3-9383-a1aa1a0ebc3f/40384878204.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9dc4aa55-7abd-48b4-af26-9e6455acd533/61716813630.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://www.gnu.org/licenses/gpl.htmlIn 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
`stream_004_off0000b799.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xB799	14368 bytes
SHA-256: `e8267c321976b93b696d994842e29661bed5b78944861ee36a86c7c7af3065a6`
`font_00_sfnt_off0000a586.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA586	5344 bytes
SHA-256: `5da404dec8e76dfd29896cc6e329c494df5fd121139e0ea7768683999b32c53b`
`font_02_sfnt_off0000df6e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDF6E	10596 bytes
SHA-256: `1d82bbd538cab50e906c9e824834fb1912f68c99bc46b84c28325c16027968be`

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