PDF malware analysis — malicious · 5abc3cb97be5fde0

MALICIOUS

PDF

74.0 KB Created: 2020-10-29 12:16:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: f25cfa0f37a7bf8b71ba59b0b3609744 SHA-1: 32b8fd72a9f7c60cc06588b923287be3eff55c3b SHA-256: 5abc3cb97be5fde0d312bb1a9ed90225290ea0ad62c4012eef10bc1bafcf996a

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to external resources, a common tactic for link farms and SEO manipulation. One critical heuristic identified a link to a known malicious redirector, indicating a malicious intent to lead users to harmful content. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, suggesting it's part of the lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://ggtraff.ru/strik?keyword=big+guy+and+rusty+the+boy+robot In PDF document text
- https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/a302deb.pdfIn PDF document text
- https://ladofozaser.weebly.com/uploads/1/3/4/3/134334290/672367.pdfIn PDF document text
- https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/vekab.pdfIn PDF document text
- https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/sizek.pdfIn PDF document text
- https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/561c7fd99eb.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/dovulavavo/attached_dr_amir_levine.pdfIn PDF document text
- https://s3.amazonaws.com/memul/management_of_anaphylactic_shock.pdfIn PDF document text
- https://s3.amazonaws.com/dogazisuze/atlas_world_map_download.pdfIn PDF document text
- https://s3.amazonaws.com/bitizopovopaso/5606537393.pdfIn PDF document text
- https://s3.amazonaws.com/gajejasa/passport_to_manhood_fort_wayne.pdfIn PDF document text
- https://s3.amazonaws.com/tibanepoxilibud/root_cause_analysis_handbook_free_download.pdfIn PDF document text
- https://s3.amazonaws.com/luramamelolem/76862872347.pdfIn PDF document text
- https://s3.amazonaws.com/tadovu/fogepolalexirexipuvonone.pdfIn PDF document text
- https://s3.amazonaws.com/sugaguxagu/96479165425.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9212/3556/files/tepegis.pdfIn PDF document text
- https://s3.amazonaws.com/xurixado/hindi_alphabet_tracing_worksheets.pdfIn PDF document text
- https://s3.amazonaws.com/gupuso/45987893482.pdfIn PDF document text
- https://s3.amazonaws.com/tadovu/exclamatory_sentences_examples_list.pdfIn PDF document text
- https://s3.amazonaws.com/wovigebi/anti_fouling_system_convention_2005.pdfIn PDF document text
- https://s3.amazonaws.com/sukobogixe/biozone_air_purifier.pdfIn PDF document text
- https://s3.amazonaws.com/midaguvimabof/little_black_boy_analysis.pdfIn PDF document text
- https://s3.amazonaws.com/jedaxopopuko/libros_biblicos_apocrifos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0505/0030/5082/files/lamibanusokodovegaluwu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0482/6637/9425/files/jpg_to_freeware_download.pdfIn PDF document text
- https://s3.amazonaws.com/wovigebi/77148353830.pdfIn PDF document text
- https://s3.amazonaws.com/dowavelaxam/personal_development_plan_essay.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_005_off0000ef90.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xEF90	24704 bytes
SHA-256: `7f9bb7ae3536751b8fa0e264eb4f62cae9f98588568b34bd5e4280fd50c59848`
`font_00_sfnt_off0000b899.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB899	5348 bytes
SHA-256: `4cca9357f085b86a3f9d04fbc5ad24135b20bb5881edf08442292a3e7462c895`
`font_01_sfnt_off0000cac9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCAC9	10720 bytes
SHA-256: `a0e5faa6d995d70eec288f758aa341d053f8fdecf59a08eb388f7e523bce0f01`

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