Malicious PDF — malware analysis report

Static analysis result for SHA-256 7da8b2740fb3e597…

MALICIOUS

PDF

189.2 KB Created: 2020-10-17 15:01:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 77a1b4ad6d65b342cb5052a2972311e4 SHA-1: 2e26c8f8044ace02024bc2ede186ab1b9f1badfd SHA-256: 7da8b2740fb3e597ad0de9899932975024a20034f987db50e902b01f5a6af0de
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • 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.
  • 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://cctraff.ru/strik?keyword=hsk+5+vocabulary+list+with+translation In PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bigunurusipota_vovavubavuw_malolipesafa.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/sibobakotowil-vibebapixeni-sosuviverudog.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/tadib-pepalitegugoj.pdfIn PDF document text
    • https://dudikojegak.weebly.com/uploads/1/3/1/4/131406444/misovikisajifek.pdfIn PDF document text
    • https://vatipasa.weebly.com/uploads/1/3/0/7/130775610/lojaga-lopuxez-ralasotazet-dazilekem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa007930-df88-4ef2-a05f-c0fab8578185/43150390197.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74c0a8b0-9769-44de-a0c3-03b84f59497e/15968818713.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f52666a-6b8c-48f8-a56f-70a5a1717a24/bugufusogofugegifipejap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eae3a52d-08e1-40ad-86b0-73195e3f8b1b/97549141717.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98f87fcc-b620-41ed-b0b0-87e159f85d92/12906591602.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d21e9d1-bed1-4192-b03a-18e12c8c721c/muminurisewazasememikisat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/537dc216-f637-4a94-b51c-64de57a99aae/91823054067.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e601f8a8-e1c3-4a9b-9d2b-4e1c211f6ecd/zodukogajuxojifuwopozej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1351/2100/files/toxunebonawataxirozano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9473/7045/files/mb_financial_new_routing_number.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26a74b60-f222-4bf2-859e-2e71c1fb7e92/53827279839.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/beea6990-e8e8-42b1-9467-b8075872b843/65638344676.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6b60b7d-cf9f-4109-8485-dff3edcd5d56/81381138059.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7d32893-da09-4218-8a09-327d72f53e2b/wulodexamanabalukukime.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e569f982-5d96-4e66-af83-c7ca3eeed5f3/lalojofofudob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa438332-56cb-4724-b10c-8009a9dfdc13/75811617680.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7221e1d-1688-4201-9441-787ad1eb4e9d/51277109919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d310ef0-39fa-4c34-860f-253630b5c2fe/29438546416.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00015e3d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x15E3D 108152 bytes
SHA-256: 4f073013f77edfa4a18258f6aa6eee959b38897cf5df55cee20f9331b796a12b
font_01_sfnt_off00029d77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29D77 5432 bytes
SHA-256: 65859ba102ee2f474f344d280bd3a233d17023f088792ada828d430039a845e6
font_02_sfnt_off0002b002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B002 18360 bytes
SHA-256: 031d0545a23819b41b8de556e9027119aadc4ccf18ba8a62e0965f2366432486

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