PDF malware analysis — malicious · aed3aa45996d6f95

MALICIOUS

PDF

109.0 KB Created: 2020-10-26 18:50:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: 29bfe59900f32b2fd50dc4b72028281c SHA-1: e6d8fe96e949922852813e63a57fce94987d303c SHA-256: aed3aa45996d6f9575df21e6f3e2c0aeddad9a5ea6d617c2c12d348b767374b4

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a large number of embedded links, many of which point to disposable hosting services and a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a "wind turbine failure database". This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or phishing.

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.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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=wind+turbine+failure+database In PDF document text
- https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/1302795.pdfIn PDF document text
- https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/988fa418.pdfIn PDF document text
- https://penopetidurip.weebly.com/uploads/1/3/2/8/132815040/karasupav.pdfIn PDF document text
- https://sakifawabepufa.weebly.com/uploads/1/3/4/4/134466371/8659970.pdfIn PDF document text
- https://tegugozitofo.weebly.com/uploads/1/3/0/8/130874592/2026769.pdfIn PDF document text
- https://vatipasa.weebly.com/uploads/1/3/0/7/130775610/98e52ddfe33.pdfIn PDF document text
- https://mizunilido.weebly.com/uploads/1/3/4/3/134352057/165461.pdfIn PDF document text
- https://penulikadima.weebly.com/uploads/1/3/1/4/131482887/busojajilubasit_lojab.pdfIn PDF document text
- https://derefejoj.weebly.com/uploads/1/3/4/3/134358497/8ef98c7b251a9f7.pdfIn PDF document text
- https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/wijigomofiweb_lotitosede_jukis_dirum.pdfIn PDF document text
- https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/noxaliw-pidiga.pdfIn PDF document text
- https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/7775416.pdfIn PDF document text
- https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/0f1d81c0d981.pdfIn PDF document text
- https://mogidudurunupiz.weebly.com/uploads/1/3/2/6/132695636/joravufaperex-gejazezudi-xeburoxikego.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/ac719dbd-95e6-4646-adbc-2689e7e6a7aa/50165601386.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a311c01b-6aa7-4b16-8040-3674e7137243/kalowobubepuxegilax.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/86cdff95-5664-4df7-bff2-d83b73f5331e/desutadoxatajerasepolozib.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/26c56228-0623-461f-a910-9b6c709fc25a/gefulivafegimeberaju.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/49e77ad4-fae8-4689-819c-981ee0bfb301/6793235856.pdfIn PDF document text
- https://s3.amazonaws.com/nisoxow/op_amp_circuit_diagram.pdfIn PDF document text
- https://s3.amazonaws.com/subud/chemistry_textbook_for_senior_secondary_school_download.pdfIn PDF document text
- https://s3.amazonaws.com/kavitokolezub/xiwugifaseseviruxavunes.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0001553f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1553F	5052 bytes
SHA-256: `1b922cb7bb0d935bd919a74c5d46988a1a065450674245cd1a032287f183f6d6`
`font_01_sfnt_off00016681.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16681	12760 bytes
SHA-256: `d92d51dae2bded4838e5d3a062f81176c81fb23ae2b4ce3675194737e6363526`
`font_02_sfnt_off00019124.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x19124	16060 bytes
SHA-256: `503f5200e83b189a546b6c6e1d808633a9135186956fe76ff9bd78de3d91e3c6`

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