Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff356a94d114aacd…

MALICIOUS

PDF

84.0 KB Created: 2021-05-23 09:17:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fa30e60faae541983157f25276b6bc4 SHA-1: 79290ac57925df5caf10ed5a622ca51b4a014760 SHA-256: ff356a94d114aacd423efb36fc2c6d00d9bd08381e42bf34e9e0c3ce3fdbee0a
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, specifically 'https://vilenefex.ru/strik?utm_term=virtual+dj+software+free+download+full+version+crack'. This URL is presented in a context that suggests a lure for downloading cracked software. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0', further supporting its malicious nature. The ML classifier also flagged this PDF with a high probability of being malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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://vilenefex.ru/strik?utm_term=virtual+dj+software+free+download+full+version+crack
    • https://cdn-cms.f-static.net/uploads/4379722/normal_602fd771859d5.pdf
    • https://cdn-cms.f-static.net/uploads/4383702/normal_604351c59d45f.pdf
    • https://cdn-cms.f-static.net/uploads/4380228/normal_5fe9c89941003.pdf
    • https://static.s123-cdn-static.com/uploads/4403537/normal_6000b5157e2b6.pdf
    • https://cdn-cms.f-static.net/uploads/4484632/normal_5fd850f31b59c.pdf
    • https://cdn-cms.f-static.net/uploads/4447663/normal_5fd67d1d5483f.pdf
    • https://cdn-cms.f-static.net/uploads/4386363/normal_60112e30565dd.pdf
    • https://cdn-cms.f-static.net/uploads/4369520/normal_60244be9d1a4d.pdf
    • https://cdn-cms.f-static.net/uploads/4422876/normal_60470f6aba807.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/makumapikeze/4299458360.pdf
    • https://uploads.strikinglycdn.com/files/a451f86d-da89-4e96-bc9f-09698918c810/43310133529.pdf
    • https://s3.amazonaws.com/zuwimadaneb/how_to_check_balance_on_vanilla_visa_gift_card_canada.pdf
    • https://s3.amazonaws.com/bibejovixapis/nigasujoludax.pdf
    • https://s3.amazonaws.com/julaxel/povifusulosamofikela.pdf
    • https://s3.amazonaws.com/megodipewukitoj/48298392382.pdf
    • https://uploads.strikinglycdn.com/files/e1fbd473-90ad-4f22-b327-02c831a4d866/where_is_the_security_key_for_netgear_wireless_router.pdf
    • https://uploads.strikinglycdn.com/files/853c7acc-f257-45f0-ab87-5a87375884b7/rotokanubuv.pdf
    • https://s3.amazonaws.com/vavapekadoliti/china_real_estate_bubble.pdf
    • https://s3.amazonaws.com/kuxuxemu/open_android_sdk_manager_windows_10.pdf
    • https://uploads.strikinglycdn.com/files/3b943036-f0ca-42c5-8bd9-5207a3465098/what_is_the_brown_v_board_of_education_case.pdf
    • https://uploads.strikinglycdn.com/files/ca93a28a-40bc-4c8e-92eb-7dd222c8c58b/kisoduzinetojuf.pdf
    • https://s3.amazonaws.com/zonivezada/69973270072.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa21.bin
d20b28864f0a15bb7b17270a3d6adbda0182bae696e48997621b9215ab0c34f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA21 5156 bytes
font_01_sfnt_off00010bd3.bin
096195b61885f01fe56fec1bf9338571c78f2efd8846530256979c01a91f160a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD3 11268 bytes
font_02_sfnt_off00013232.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13232 4324 bytes

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