Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f9ba723485f8ee…

MALICIOUS

PDF

44.2 KB Created: 2020-10-17 11:33:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 4810da7260230e1501f72715a37fdbe0 SHA-1: fc4a4c4dc2e1a6de4463c9ae3de8cbaecff492ee SHA-256: f0f9ba723485f8ee845f5240b01fdf3faae7361b9b74e7d8c57da7bf3b39db97
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.me/123?keyword=my+talking+tom+cat+hack+apk+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5f881ff2e79aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366407/normal_5f8a1d742b0fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_5f8700deb12c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376357/normal_5f8a7c23996e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5f87a2471c9d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367287/normal_5f89a4dfecc01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f88fd57b372b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366660/normal_5f87a21e0e562.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369782/normal_5f8892ac5298d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366664/normal_5f88f28eb487a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375340/normal_5f89c91295761.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f8765a11ab70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367622/normal_5f8a04096c7dc.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/caa64.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/bosilo_ginasesif.pdfIn PDF document text
    • https://raxiruzaxulam.weebly.com/uploads/1/3/0/7/130738564/c0048e2e5.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/602420.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/lozar.pdfIn PDF document text
    • https://barofabilis.weebly.com/uploads/1/3/2/7/132712093/5425260.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/kibumo_sipijop_fisek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6361/8983/files/evaluated_receipt_settlement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8161/9870/files/98575671099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0467/9722/6133/files/simon_and_garfunkel_parsley_sage_rosemary_and_thyme_vinyl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9624/3364/files/kumon_reward_points.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1518/3777/files/genius_sw-hf_5.1_5050_v2_manual.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_off00006c4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4D 5476 bytes
SHA-256: 9f60aab7e91e0cef8d2606ea5860111f76b456f39eecb0510d5787ac9ab23c7c
font_01_sfnt_off00007eda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDA 10764 bytes
SHA-256: 80a5558dd35e711f126e339cb825feec3e7901f59de99c8eff8e52f37961fcd6