PDF malware analysis — malicious · c59f69480cd826b9

MALICIOUS

PDF

92.2 KB Created: 2021-03-12 12:58:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22

MD5: 6b0f91ce2d8ad4b0264f6ba3f033e11b SHA-1: f86b12e7a4a1239eb972f9dcef9ba9c9114cc7da SHA-256: c59f69480cd826b9f5dd0d138abe8bbe256edd172816e435aa7ba5bcde526609

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious intent, including ML classification and ClamAV detection as a phishing trojan. It embeds numerous URLs, with a primary one pointing to 'baarspo.ru', suggesting a phishing lure related to admission results. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest it's designed to redirect users to malicious sites for further compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://baarspo.ru/award?keyword=sust+admission+result+2020+19+pdf+download PDF link annotation
- https://cdn-cms.f-static.net/uploads/4417652/normal_5fe65e73e55a5.pdfIn PDF document text
- http://getveran.site/nivavininewezepivimikazajligih.pdfIn PDF document text
- https://gonotelavekufuf.weebly.com/uploads/1/3/4/6/134615299/razamijoj.pdfIn PDF document text
- http://austritkfa.com/xedadisekujufanovekalodou087.pdfIn PDF document text
- http://merovew.xyz/chinese_japanese_kanji_characters_spine_tattooejsl6.pdfIn PDF document text
- http://naturfresh.fun/putamumaliv6qsg.pdfIn PDF document text
- http://reduslimitalia-ufficiale.site/why_is_the_discovery_of_america_so_importantt3uoi.pdfIn PDF document text
- https://ronabamipiboti.weebly.com/uploads/1/3/4/5/134598089/birijuful.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4403428/normal_5ff087a91c673.pdfIn PDF document text
- https://foderojev.weebly.com/uploads/1/3/4/0/134041652/merutav_puteb_mimojegoxogag.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4421042/normal_5fdd5c1625e86.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4391013/normal_6005d7d9bdd97.pdfIn PDF document text
- http://dayzcommunity.info/mexuxadigvz1cr.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4402949/normal_601d253397aa8.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/43267571-01e4-43ad-bd9c-5f3ddb626352/68415051465.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b4eab7c8-75d7-4d98-b37c-31b0bac50765/baxubeladovi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/19df2623-67ec-4ea8-a9c3-98b026a472a4/10081392027.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3e2869fe-1ae8-44b2-9a4b-452f6a41963b/37570508141.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/11abad4e-6b45-48a5-b1fe-5146e5965dbb/whirlpool_quiet_partner_3_heating_element.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1c4299f9-564b-4fe8-ab7d-a14fe22c6251/nibekijimidok.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/08a782f6-210b-4b6e-b1ae-cfe627e3de5b/84413224867.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
- http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f9a2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF9A2	5864 bytes
SHA-256: `84e016cbf1fef57ec5b09160997141982810090e6ced81dd4fec3dd22a0848fb`
`font_01_sfnt_off00010d8b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10D8B	15700 bytes
SHA-256: `3722044cb5193a6f2aa654ebaf4dc8344187c271d186c6c694b0ff1a9735cf2e`
`font_02_sfnt_off00013af1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13AF1	11088 bytes
SHA-256: `ef6bd0feaede94a8449d2780f425544d71a79aa9cbabd3ab3309f6b3f417f2f1`

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