PDF malware analysis — malicious · 59ee9bc060101709

MALICIOUS

PDF

66.8 KB Created: 2021-03-07 07:55:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 188700a4644b1be9a498e8dac2f8a3ae SHA-1: 906903fb5ec995bbcf7e826a4fc3288d9a7a8286 SHA-256: 59ee9bc0601017096e11c3db5ed1418edbccbbefd9f565865d0e23ea2c89f138

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.8273

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://pelibifir.ru/award?keyword=nutrition+taco+bell+burrito+supreme PDF link annotation
- https://static.s123-cdn-static.com/uploads/4428039/normal_6000c099d9291.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4420756/normal_5fc8398abc492.pdfIn PDF document text
- https://cdn.sqhk.co/buzulexoxuve/Mgegjie/celestial_seasonings_green_tea_caffeine.pdfIn PDF document text
- https://cdn.sqhk.co/lukulobu/hzKhjja/polytone_mega_brute_occasion.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4410985/normal_600ba59844337.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/af2200d1-64ef-4f6a-b3c1-6f700db5012c/nicky_cruz_cross_and_switchblade.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5e3b6129-e4fd-4cf2-9598-f803ecf01e73/what_is_the_difference_between_life_and_living_annuity.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5db1f1db-f713-46ba-ac6c-105142f7a5d5/85635632862.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a0a0a749-aa24-4dfd-945a-1a21a19a2b40/bodobikegadalig.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a5f6b1b6-c37a-4002-897f-95795a72b494/fikabodovijikelomudi.pdfIn PDF document text
- https://9d50af6f-dbf7-41ba-b854-83985329a12b.filesusr.com/ugd/33c377_ecce8835a93d40a8b380d098b6be245c.pdf?index=trueIn PDF document text
- https://fa202315-5cd5-4006-9a99-7c5d4406650e.filesusr.com/ugd/61804c_aa278826d1e144cb9fd72f3de905b312.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/09451748-4bdc-49bd-a2b5-789e59220b88/52583789473.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/511430a0-aa27-42b8-af51-cef435b912d9/magic_firearms_5e.pdfIn PDF document text
- https://52468903-0e2d-47c5-babb-61e1d305d291.filesusr.com/ugd/32777b_b33c1c5e8a1044ba9b5acc585cdd381a.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/a682b8e6-710d-4327-9e03-bbf3920c4a53/hec_hms_4.0_free_download.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e17b8707-70b1-4963-82d5-b08793d8bb55/saletevamasivipi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f5969377-d34b-490c-8300-87c0fc85a471/how_to_calculate_psi_for_water_pump.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3548cb7e-e109-4c7c-8125-a54f214383eb/6901304247.pdfIn PDF document text
- https://78ff948a-0765-49f5-a22c-0fbe0eba7848.filesusr.com/ugd/888d0b_a88da6fafc3944ec93eee7c1e9b62f58.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/0b4204d2-0448-459d-b52e-e83997a27289/gibulitisazixamu.pdfIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f8b4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF8B4	5068 bytes
SHA-256: `bc30a19e4f442eacaecd62ea5973b1077f606875782c876f440c6396826eeba9`

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