Malicious PDF — malware analysis report

Static analysis result for SHA-256 e61402ff40feac2b…

MALICIOUS

PDF

86.9 KB Created: 2021-03-29 05:19:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47d275857264ab1b53d02f0715039505 SHA-1: d3c68ec06adc5985c0ba03dcf11eebf2d2fb021c SHA-256: e61402ff40feac2b22b5761ecde5bc6156726d43e71db244832a84e2f7997fc4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to suspicious domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URLs are likely used to redirect users to malicious sites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/award?keyword=deriving+suvat+equations+pdf
    • http://doucheapp.xyz/553938484912gtc4.pdf
    • https://cdn.sqhk.co/zunesunatiri/0Xsi4qd/cobb_theaters_merritt_island_prices.pdf
    • https://narapafugoziror.weebly.com/uploads/1/3/0/7/130775848/tubiveposiduvisezi.pdf
    • http://acgmgroup.ru/anlage_er_2018jwg5u.pdf
    • https://toxofeleziwogiz.weebly.com/uploads/1/3/1/4/131406173/robowufizejarepo.pdf
    • https://cdn.sqhk.co/satasevubu/bnggRgg/93302611715.pdf
    • https://towowiwegopute.weebly.com/uploads/1/3/4/0/134019464/libopiriv.pdf
    • http://dress-russia.ru/timuso37ow4.pdf
    • http://8bitbeardsco.com/tijogojegqt4oj.pdf
    • https://rimedugomo.weebly.com/uploads/1/3/0/7/130740195/bopudum_gazarotabelekej_dejurazigi_puxefa.pdf
    • http://good-production18.site/79504476009b1bdy.pdf
    • http://eeeeeyyy.space/mazitaviragozedezopull75c.pdf
    • https://muverope.weebly.com/uploads/1/3/0/7/130776407/2e3f9fe6bff.pdf
    • https://cdn.sqhk.co/zezegawutogu/xjjWJXr/rca_universal_remote_control_codes_for_sanyo_tv.pdf
    • http://nowtorrentz.com/138034320602cqkh.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d4e974f0-7ee7-4632-a531-bb4dc46b396e/romeo_juliet_malayalam_movie_actress_name.pdf
    • https://uploads.strikinglycdn.com/files/30f6ecc1-b0ba-4f3f-8746-18e3137bdc79/90785142623.pdf
    • https://uploads.strikinglycdn.com/files/b2755fc1-aa2c-4a61-b068-a1e55d1aa766/garmin_montana_600_vs_700.pdf
    • https://uploads.strikinglycdn.com/files/49d8e997-e6cf-4f5c-a001-9b5a2498c02b/is_sao_progressive_manga_finished.pdf
    • https://uploads.strikinglycdn.com/files/cc16eb0b-f8e4-4a20-80ba-2259a611970c/how_to_connect_to_jam_chill_out_speaker.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa90.bin
03d22cda7937daf08f157ef5fe126c753b1fd97736925d02c8c5a8c205b4e1d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA90 5360 bytes
font_01_sfnt_off00010ce1.bin
0d85b6e9ba6611572eb821ec0ffe1f6942e1685b54b34387262e519ee1222a47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE1 12516 bytes
font_02_sfnt_off00013787.bin
ef01e846f696a56b3aa53f54043cc728735036ee29123e5255313ca696c1f744		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13787 16460 bytes

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