Malicious PDF — malware analysis report

Static analysis result for SHA-256 a206babdd78290ef…

MALICIOUS

PDF

117.8 KB Created: 2021-06-14 05:24:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0318ca7dd4a2d7ebf2f578c0b188e51d SHA-1: da87d22be6f226b768da7ce9c37b17938f0e1891 SHA-256: a206babdd78290efcc19557c22e304704e5a79595e70047da0b49bc454470164
154 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. The ClamAV detection as 'Pdf.Phishing.Trojan' and the presence of multiple external URIs suggest a malicious intent, likely to redirect users to phishing sites or distribute further malware. No scripts were extracted, but the structure strongly suggests a malicious document.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4034

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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
  • 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://crysiq.ru/pbw?utm_term=aur+ahista+mp3+download PDF link annotation
    • https://buzijivugaza.weebly.com/uploads/1/3/4/7/134709386/tusaxire.pdfIn PDF document text
    • https://zegotasubevit.weebly.com/uploads/1/3/6/0/136097081/f37417682.pdfIn PDF document text
    • https://rujurujubawupof.weebly.com/uploads/1/3/0/9/130969172/47f32d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380674/normal_6003f86c7c74b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474206/normal_5fe5aa1428004.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378628/normal_603ea5fcb3be2.pdfIn PDF document text
    • https://kogovuvukadag.weebly.com/uploads/1/3/2/6/132682039/wufabenazepadus.pdfIn PDF document text
    • https://rijejoxutozi.weebly.com/uploads/1/3/4/5/134599637/birawinamosow.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4376875/normal_60b4fb4b88d39.pdfIn PDF document text
    • https://kabatinamipe.weebly.com/uploads/1/3/4/6/134636342/642681.pdfIn PDF document text
    • https://joviwufigikaw.weebly.com/uploads/1/3/1/4/131453355/kofefuvuwobek_namifirir_dogizenurak_woxulusineme.pdfIn PDF document text
    • https://nofexozodaxo.weebly.com/uploads/1/3/4/5/134522082/e25d234640.pdfIn PDF document text
    • https://kabibejago.weebly.com/uploads/1/3/6/0/136050231/8316253.pdfIn PDF document text
    • https://totujefova.weebly.com/uploads/1/3/4/0/134096099/tuxobuvezozepuguno.pdfIn PDF document text
    • https://fimudelowuj.weebly.com/uploads/1/3/1/4/131455024/timawibikutojiva.pdfIn PDF document text
    • https://rawixokuboja.weebly.com/uploads/1/3/4/0/134097397/6100338.pdfIn PDF document text
    • https://vizipelijokefar.weebly.com/uploads/1/3/4/5/134512389/rorafasofabom_xaguligix_liziwubemudis_nogoposamap.pdfIn PDF document text
    • https://xukoperupe.weebly.com/uploads/1/3/4/7/134743664/riwebiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://fisakujimet.pbworks.com/w/file/fetch/144812085/how_to_top_up_cashcard_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60d5b130-418e-48c3-8429-1419db79b3f9/58564517273.pdfIn PDF document text
    • http://wotetidi.pbworks.com/f/faridexoxofigigevitu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ec1da58-f123-41e3-9034-639082e0e662/xudunibuwaluwusutovumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad6d6ab3-79e6-4cac-b889-5487387bde37/new_life_promise_plan_reviews.pdfIn PDF document text
    • http://fotikeralo.pbworks.com/f/tp-link_n300_wireless_outdoor_access_point_install.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b096b8d-9b27-4eda-8d7d-87e79d94ed1c/fupovosewozedeno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aed33624-b553-4b51-be4d-eb70921f2a12/73643914761.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16718 5444 bytes
SHA-256: e5feb1852c66110c3b813b34f0b43b0d9ee57ce4bcbb1e8b87ca7a976c80ca41
font_01_sfnt_off00017978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17978 7400 bytes
SHA-256: 66b501e3987d66325b638c6c5eb1a23a7a3b70427c04aff9b15028f3633755c0
font_02_sfnt_off00018db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18DB0 22420 bytes
SHA-256: 03901d2e021c314fb8df51991a9beb58ce5c7b0ac07f0d8bb99c956b0700b619