PDF malware analysis — malicious · 09cc6a9ca556a470

MALICIOUS

PDF

49.8 KB Created: 2020-10-16 09:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: 67dad2cf672031c5e32781090e76b6fc SHA-1: f200329f9fe776b159af4a1b61950a9c55469de7 SHA-256: 09cc6a9ca556a4708539d2d9bcaa339e0721f39f2d128580626360af7a249cbe

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded URLs, with one identified as a malicious redirector. The ML classifier strongly indicated maliciousness, and the PDF structure suggests it's designed to drive traffic to external sites. While no scripts were explicitly extracted, the presence of numerous links and the malicious redirector indicate a probable attempt to lead users to malicious content or phishing pages.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
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.
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=ib+business+management+guide+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4369191/normal_5f88bb1e9fcf6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368495/normal_5f883e28bad44.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368777/normal_5f87da860df48.pdfIn PDF document text
- https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/ladefubit-tafojapumepokan-vowupe-zidedix.pdfIn PDF document text
- https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/gevoderovepiru.pdfIn PDF document text
- https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/xizaxamuxive.pdfIn PDF document text
- https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/jovegoxo.pdfIn PDF document text
- https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/vepulakanug.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368955/normal_5f88f02407c21.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369631/normal_5f888392e43ba.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365638/normal_5f873b758dc5a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368228/normal_5f87b214bbccc.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/7585456e-216d-4ba6-a489-b93dd4c70a33/babetidamalosomirogo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/34752f45-969f-494a-b6fd-99c322962223/84519304952.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3015695b-98f7-4213-aaa4-3585c0235721/81359587713.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/21e81ddb-52ca-4e33-8bc0-51a9acf816b0/41175600330.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1415/0553/files/45297589409.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/0414/8382/files/rowiwag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5719/1843/files/corporate_finance_interview_questions.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0271/4536/files/weld_on_beadlocks_anti_coning.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/6505/7695/files/pool_booster_pump_plumbing_diagram.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0492/6409/9484/files/67973606557.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0479/5226/5379/files/24677100910.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/8896/0416/files/gapexif.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3015/0309/files/40785603916.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000075e8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x75E8	5084 bytes
SHA-256: `749296ee598f2f5ffbcd168628ad196fac18bbefecf5d9a54a557165f78e548b`
`font_01_sfnt_off0000870c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x870C	10564 bytes
SHA-256: `ac76a65cce8282efd006743fc0a01754b9ba9c942a75dc1de8a1b3fb7693dab7`
`font_02_sfnt_off0000ab2a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAB2A	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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