Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f7e5575fadb5514…

MALICIOUS

PDF

44.1 KB Created: 2020-10-29 07:13:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3834ac9f9432d0518f81994abc65029b SHA-1: d29fc9627f311009d78248d08c013a4784ef4576 SHA-256: 9f7e5575fadb55143775ba50de9d8e1afeb22fd9e7a05f93669595cdcd074498
154 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 and contains a large number of external links, indicating a potential link farm or redirector strategy. One of the embedded URLs, https://ttraff.club/123?keyword=cane+creek+thudbuster+3g+st+seatpost, is identified as a known malicious redirector. The document's purpose appears to be to lure users through these links, potentially leading to further malicious content or exploitation.

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://ttraff.club/123?keyword=cane+creek+thudbuster+3g+st+seatpost In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403823/normal_5f926e0996ca6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367642/normal_5f89488bb7b26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415519/normal_5f980a4c3b884.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/8f42381e-e34f-4179-833f-168dac56388d/tebewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8320/9633/files/70231269961.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3992ebc8-d7f8-4ec8-830c-bbe24f39e90e/gefobunupuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d55bf568-f313-4a2f-92f1-d7cfb441bab3/97893674310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b465b9d-7618-42ef-9db5-b4efc1fd7288/51531151658.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b475687a-8d99-40c5-84f1-3377e2b339bc/wamafulazitusipepiwun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fd19c2f-cbe8-4842-b8e0-26c551a3d542/ap_calculus_bc_logistic_growth_works.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff37912e-d1c7-4a25-84fb-7deec52578de/24614373866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3685/8773/files/89888738191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1059/1390/files/long_island_fishing_report_august_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc5ffcc5-d6ca-4175-b1fe-bbc24f4dd492/mujenipovejid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3414/8501/files/kpop_idol_diet_tips.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91c95fe7-fe18-4fd1-af0f-0c829048f371/arduino_mkr_gsm_1400_datasheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f63eca8-4946-491d-a63c-127652de8dbb/dugipobuwujurawer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d341d452-c0c8-4e2d-ab31-350a1d944ab0/54579665735.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000697c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x697C 5576 bytes
SHA-256: ef55d3e13720ba7e9e68951f4c4e0c8b5308f9877e543614b57d2d4701a7d584
font_01_sfnt_off00007c5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5E 11648 bytes
SHA-256: 93eb0b727371aecb889677fa610fa3d267e614383062a52c6111218615822906

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