PDF malware analysis — malicious · 8a7fc20af39091f0

MALICIOUS

PDF

82.8 KB Created: 2021-03-13 16:01:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23

MD5: 61653255bb5fa9c49a461aab9d65db0e SHA-1: 64caf582a3a2bd62c1ec3e94bc60b54852fefb86 SHA-256: 8a7fc20af39091f02ecad1b34ba9831f7efc39ae4247a705e7bf0af440d1cea2

66 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9957

Heuristics 4

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.
External URI info PDF_URI

PDF contains an external URL action
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://gimoguvi.ru/award?keyword=todos+los+medicamentos+y+para+que+sirven+pdf PDF link annotation
- https://cdn.sqhk.co/zatakabe/hhOihqi/megorawirenujode.pdfIn PDF document text
- http://sokixatov.mywebcommunity.org/wuduja.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4370080/normal_5ff9887d07617.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4480399/normal_603c09cbd2e2b.pdfIn PDF document text
- https://cdn.sqhk.co/mixasuwekov/8O0ichj/juventus_fc_jersey_ronaldo.pdfIn PDF document text
- http://tigibisolefora.mygamesonline.org/aristotele_filosofia.pdfIn PDF document text
- http://tozidak.mygamesonline.org/appassionata_3rd_movement_sheet_music.pdfIn PDF document text
- http://nabavawuzafurur.mygamesonline.org/baxuvatiromaxapugenegil.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4478408/normal_603cb661b42ed.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4487927/normal_6033e2b852d27.pdfIn PDF document text
- http://fitatuvepejozo.sportsontheweb.net/87599921245.pdfIn PDF document text
- http://juzufezike.mygamesonline.org/gepudolewubibebod.pdfIn PDF document text
- https://cdn.sqhk.co/vivakawibaki/Kjcifgd/mirrioexpress_reseller_programs.pdfIn PDF document text
- http://gagefiwirimat.medianewsonline.com/integration_of_inverse_trigonometric_functions.pdfIn PDF document text
- https://cdn.sqhk.co/wexunaveb/ghjgg5t/67490398414.pdfIn PDF document text
- http://lumufurisazela.mywebcommunity.org/how_to_pair_a_directv_remote_to_a_lg_tv.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://ec8c99fd-5413-4e38-b6a0-2ccbba71fc6f.filesusr.com/ugd/de02f3_56d44b28fdc74a81bb0e07a54e54cfcd.pdf?index=trueIn PDF document text
- https://80b1f93a-fe74-4439-a81d-34814fa7a505.filesusr.com/ugd/e56fe2_a7273ed156d5425cbec94a2974b0b101.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/dowesitobuga/lubusamagumiremapukupo.pdfIn PDF document text
- https://s3.amazonaws.com/tuzakifezara/bahubali_2_film_tamilrockers.pdfIn PDF document text
- https://a0a5ada1-270c-452f-b092-d943fc6f0dc0.filesusr.com/ugd/306762_98f5b84c3c774200ad0bacd9ff3a7890.pdf?index=trueIn PDF document text
- https://cad90261-f038-4e8a-b384-2e0e37e6cb8c.filesusr.com/ugd/4c4e45_026089023f7c4cc39c7ce7b05a95195a.pdf?index=trueIn PDF document text
- https://e26dc784-fa46-4601-9f6d-57686faaf216.filesusr.com/ugd/c66525_98ebea7f3fd7496c8db8bc93cf6cccf8.pdf?index=trueIn PDF document text
- http://kivozusemu.atwebpages.com/how_to_day_trade_for_a_living_andrew_aziz_free.pdfIn PDF document text
- http://bibezakomi.myartsonline.com/23926965461.pdfIn PDF document text
- https://s3.amazonaws.com/sezewu/bein_sport_2019_apk.pdfIn PDF document text
- https://s3.amazonaws.com/bupaxomu/89896464705.pdfIn PDF document text
- https://s3.amazonaws.com/robumuduluwise/linixiziwunirulejale.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_off000103f0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x103F0	5540 bytes
SHA-256: `2d3dcc8a61232d62de199ad9274421cf4c0041621b9c663b6aac15ac9096631e`
`font_01_sfnt_off000116bb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x116BB	11832 bytes
SHA-256: `6f760918070bea05e5fe8ea7c7e113cc849c14ce20442dc617608944b86bb490`

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