Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ceeefcb01aa715f…

MALICIOUS

PDF

44.8 KB Created: 2020-10-27 16:22:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 868f748f6499ce506387855f381fa8ee SHA-1: 83298dde05a3d4a2b9cb1e07467d8aa9b28a5cb0 SHA-256: 7ceeefcb01aa715f7626cc62b2e4e26e868ca99018b3cc767677e07026279417
184 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to disposable hosting and redirector infrastructure, indicating a link farm or phishing attempt. The presence of a malicious redirector URL suggests an attempt to lead the user to a compromised or malicious site. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely related to SEO manipulation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=built+lean+workout+review In PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/gudamunajudokuxag.pdfIn PDF document text
    • https://pisefipekopaz.weebly.com/uploads/1/3/4/4/134461515/xogixuxiwoz_nagowanifo.pdfIn PDF document text
    • https://pimetagedipimop.weebly.com/uploads/1/3/1/6/131636886/gagebapor_suxofegajoperuv_wiziziru_luzisabuzagaf.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/kaven_lidotobin_robisud_tepefobinijowaf.pdfIn PDF document text
    • https://jikeberu.weebly.com/uploads/1/3/1/8/131857846/9365270.pdfIn PDF document text
    • https://timokejega.weebly.com/uploads/1/3/4/4/134454798/vazajapimoxi.pdfIn PDF document text
    • https://buxiniti.weebly.com/uploads/1/3/4/3/134309366/vejoxiwipeti.pdfIn PDF document text
    • https://kafaziwe.weebly.com/uploads/1/3/1/0/131070109/e4abb6a56dc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mubefula/98206085635.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/lifapakikofej.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/41197290289.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/antigone_full_text_download.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/astrology_books_in_hindi_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/43008825275.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b94d247-5259-4b2a-a60b-3d471003ef71/89702894570.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b4b0d0c-998a-4b06-8cf9-689cd16e727d/31345804916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9110/7233/files/lenoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2889/8211/files/live_nettv_4.5.1_apk_download_aptoide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1155/3473/files/xuloja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/1000/5658/files/kangertech_top_box_75w_mini_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/5565/0230/files/modern_combat_5_offline_apk_revdl.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_off00006fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA7 4768 bytes
SHA-256: 5c69118a878f4eb16d59fb801deb3efa9c5f63057533002fa5091299f7bf6c1e
font_01_sfnt_off00008002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8002 11196 bytes
SHA-256: 3aa836bcf144085a07367b9aea4b8749627d3f9c001587f5841d40fe4314668e