PDF malware analysis — malicious · b746e17cac3ce0dd

MALICIOUS

PDF

89.7 KB Created: 2021-05-30 00:49:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: b0b7684bbd3d6f7069428ec7276ee74d SHA-1: d03c130a8ec2ddd343f3df8b4eb2c62c02c76f45 SHA-256: b746e17cac3ce0dd3bea30b16075c41670fcbf7defbc5697d9b6958f5485ae5a

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, a common tactic for link farms and phishing. The embedded URL 'https://maypoin.ru/strik?utm_term=cuanto+es+un+1+kilo+en+libras' suggests a lure related to unit conversion, likely to direct users to a malicious site. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a phishing or trojan-like behavior.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
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://maypoin.ru/strik?utm_term=cuanto+es+un+1+kilo+en+libras PDF link annotation
- https://fiduludebiwoki.weebly.com/uploads/1/3/4/3/134317875/mobizased-tozim.pdfIn PDF document text
- https://setoximusekaz.weebly.com/uploads/1/3/4/7/134714347/kavote_mifixilopiw.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4391013/normal_5ffeb1c803e82.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4452372/normal_5ffb54c0e4a47.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382209/normal_60303fb076f47.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486213/normal_605253859cdd1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379385/normal_604f319125832.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366015/normal_60400b269ba2e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479454/normal_5fd8cf6ff1a4b.pdfIn PDF document text
- https://guxodobozit.weebly.com/uploads/1/3/4/3/134333536/vuxega_tonufuwejetan_womapadokul_merureni.pdfIn PDF document text
- https://xosufovopoxom.weebly.com/uploads/1/3/5/2/135298930/fufavavi.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/cfa63da8-6e56-430f-8fb8-8120ecb23ae2/what_intermolecular_forces_are_in_hcl.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6820aecd-1316-4186-b0a2-d504bb64ba0d/street_vendor_laws_chicago.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3b572582-310b-4f1f-8081-c5d05ddbaa8d/bushnell_tour_v2_price.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9a7a4d35-3f19-433d-9026-a980005aff21/how_to_turn_off_cateye_velo_5.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/da8d3dbe-8f24-4c47-8756-602e3d6a05c1/download_special_forces_group_2_mod_menu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6717bd57-ccad-40f9-9958-4cfa0545920a/vejunika.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/86238200-244e-4230-9075-bbac51b25c2c/950689226.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f379877c-921a-4255-8ac9-4be3f583bafc/51410366225.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/046b0272-7d16-4cd9-89fa-afa73e5cc76f/how_to_get_matric_results_on_phone.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/320468cf-ee25-48f9-a980-551ac5b63952/suunto_cobra_computer_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/64548b94-b0bd-4a21-8b10-01aa0cec2289/most_reliable_french_door_refrigerator_brands_2019.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_off00011003.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11003	4840 bytes
SHA-256: `02bd9ba3ba9ed982494e67459c64fa92232c70af6633071bda5a1b13de6a2b85`
`font_01_sfnt_off0001208a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1208A	10960 bytes
SHA-256: `ac4b5a61450df5937276e6d9b94e2654880ae0e3f645b9463e4a4633298ef0e2`
`font_02_sfnt_off0001447e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1447E	16060 bytes
SHA-256: `f5c33ee07bea7cd32fbd6d7187728561cb8e33ef2c55140341304239d40392b9`

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