Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e6327078d6d292…

MALICIOUS

PDF

85.6 KB Created: 2021-09-20 17:29:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: de0f4c073c84a7f53839f0574b3ec3eb SHA-1: 9df875abad6128f85a6ff85bf628fd26afcdf402 SHA-256: 96e6327078d6d29250e4dc87d42f0d92fbd85b934ae487f3ce8c2e8a2e0a61da
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised WordPress sites and disposable hosting domains. The embedded URLs, such as 'https://wastran.ru/uplcv?utm_term=true+skate+mod+apk+all+skateparks', likely serve as lures to download further malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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 link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://wastran.ru/uplcv?utm_term=true+skate+mod+apk+all+skateparks PDF link annotation
    • http://madinagirls.com/easydo%20v2.00/files/uploads/38591656869.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16134e0d758d5a---94894711727.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/6c1c0d910eebd53bbca1dc1410bcc348/potaxaxovufinibogu.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/7967616577.pdfIn PDF document text
    • https://ncvpte.in/userfiles/file/38420006205.pdfIn PDF document text
    • http://dryoucosmeceutical.com/userfiles/files/41599027367.pdfIn PDF document text
    • http://bulmarconsult.com/files/poziteferawimabe.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143f6155f2b2---wugovonururirozereronipuj.pdfIn PDF document text
    • https://cochleartudaskozpont.hu/files/gofatepakubuxojibizo.pdfIn PDF document text
    • http://teplospectr.ru/images/files/93134928410.pdfIn PDF document text
    • http://nfraccon.org/userfiles/file/juxixonikekixu.pdfIn PDF document text
    • https://www.hasmow.com.au/application/third_party/ckfinder/userfiles/files/zakatevamonadupivizowofu.pdfIn PDF document text
    • https://newfrio.com/userfiles/files/87681346904.pdfIn PDF document text
    • http://ruizhishengwu.com/uploadfiles/file/200226571644.pdfIn PDF document text
    • http://kyochonbuenapark.iorderfoods.com/uploads/files/24743416586.pdfIn PDF document text
    • http://klaaswester.nl/img/file/79037671002.pdfIn PDF document text
    • https://gitedu.in/ckfinder/userfiles/files/22766665254.pdfIn PDF document text
    • https://intervalhousehamilton.org/ckfinder/userfiles/files/88742458550.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/a3m51bno2fqs7jtenk0k16hi5u/45547316917.pdfIn PDF document text
    • https://gelblighting.com/userfiles/files/kugabuzipajegogutigofevim.pdfIn PDF document text
    • https://kirbas.com/img/uploaded/file/7779852779.pdfIn PDF document text
    • https://getadoc.in/ckfinder/userfiles/files/80792720530.pdfIn PDF document text
    • http://unseretochter.ch/images/file/dejavenadejovunumatim.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://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.

FilenameKindSourceSize
font_00_sfnt_off0000d10b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD10B 17828 bytes
SHA-256: 9bd840e38ca724e0f7add454c8dc7fb71ec8708ddb0d9b64c91e59f29ffb0f91
font_01_sfnt_off0000ec77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC77 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10489 16848 bytes
SHA-256: 36efd1d03f7003079bf8e055777cc71427f375aaf232a5cf03044f26789dd96a
font_03_sfnt_off00012fdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FDC 10512 bytes
SHA-256: e2973b16842c73bfdaec48972a59370f31319aa5f512d67c3fa9fbbeccb80b91

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