PDF malware analysis — malicious · ba31ec6309c51058

MALICIOUS

PDF

82.2 KB Created: 2021-02-10 15:44:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26

MD5: 8d8c3e28f1f7162579bcf6ab1691e432 SHA-1: 9ed7abd6195d8ad35f5e103d66a16d698ff78f62 SHA-256: ba31ec6309c51058fe2f55b6259fb6b03ca47a11a4505418f672f4d6147626a2

244 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded links, many of which point to known malicious redirectors or disposable hosting. The heuristic firings indicate a link farm designed to direct users to potentially harmful content. While no scripts were extracted, the structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 6

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://crophysi.ru/aws?utm_term=volume%2528+sound+booster+apk In PDF document text
- https://cdn.sqhk.co/vozevadijut/z26idhi/escape_race_2d_car_racing_games_online.pdfIn PDF document text
- https://tuzafezinaxav.weebly.com/uploads/1/3/4/3/134319976/6227061.pdfIn PDF document text
- https://kosipomorogimel.weebly.com/uploads/1/3/4/3/134307263/xitenejede.pdfIn PDF document text
- https://mogalarozo.weebly.com/uploads/1/3/5/9/135968713/garixekeganot_kosivi_doziror.pdfIn PDF document text
- https://cdn.sqhk.co/fuzokikili/UXANXjH/novarilokow.pdfIn PDF document text
- https://cdn.sqhk.co/fudikuzi/6wY5vuT/top_40_radio_station_list.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4475563/normal_600a5e3692739.pdfIn PDF document text
- https://cdn.sqhk.co/silutoge/DUWbtia/sakisovuxosavaduvu.pdfIn PDF document text
- https://zafivagofe.weebly.com/uploads/1/3/6/0/136011523/8442ee773cd38.pdfIn PDF document text
- https://titapogesasoja.weebly.com/uploads/1/3/1/3/131380181/c86f7855ed7736.pdfIn PDF document text
- https://tofikopu.weebly.com/uploads/1/3/1/3/131381225/0713004f2d517be.pdfIn PDF document text
- http://heartcenteredequestrian.com/driving_school_2016_hack_apk_iosodv2l.pdfIn PDF document text
- https://cdn.sqhk.co/jugemito/crZigih/jibedu.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://pedijuwugeta.rf.gd/pasifonigujisanasumokaro.pdfIn PDF document text
- http://rawupul.rf.gd/sepsis_guideline__sofa.pdfIn PDF document text
- http://lekozuni.epizy.com/b_c_o_m_ka_full_form.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ca1f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCA1F	5352 bytes
SHA-256: `29eff61015a763a55c035fd619085bc9210e1f51b215b1a3a5dfa9f9ea21d35c`
`font_01_sfnt_off0000dc37.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC37	10444 bytes
SHA-256: `f8f725e70d30a7e1ee893c6adf4d99184f052ddf32446784f714481a923ad8a2`
`font_02_sfnt_off0000fe2f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE2F	10704 bytes
SHA-256: `2d9a68c13f4cb3e622a3608d32b6ab81d76a7f7ca1b88b4d6aa19cafb20593d7`
`font_03_sfnt_off000122c8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x122C8	16492 bytes
SHA-256: `eca83ba0c726b96b99a8a767537d46a242cbf573efb99f09ffd941e2211c2eee`

Open this report in the interactive analyzer, or submit your own file for analysis.