Malicious PDF — malware analysis report

Static analysis result for SHA-256 c370c7dd4f4b8fc5…

MALICIOUS

PDF

49.2 KB Created: 2020-10-29 02:24:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: da7cdf3d416da00d775ff0510eec7d3d SHA-1: 233f5fe052e7bae45998891c71e5d571ee907550 SHA-256: c370c7dd4f4b8fc5dfcd58431bc47babcd4e2f4f9805b82780f37f12f1f28a80
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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

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/pify?keyword=the+pleiadian+workbook+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372673/normal_5f9a094f6585a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388157/normal_5f922ff978c9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413867/normal_5f97d41326b79.pdfIn PDF document text
    • https://nipogoloduvi.weebly.com/uploads/1/3/4/3/134368022/9011392.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413980/normal_5f9a05c41b7a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371523/normal_5f8b5ece99d00.pdfIn PDF document text
    • https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/banatoxuzamuso-jinoru-bejafona-topiluzi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388271/normal_5f9115ac5839d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409255/normal_5f95d13b95744.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408596/normal_5f99c951845ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382638/normal_5f8cad4092a19.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/1/0478/3957/6223/files/mesoxiziwesukorikunap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/109e97bd-a6b2-42f4-8467-7e61eb1d0523/91036352835.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85728e6c-4128-4bae-908f-ffe4d19f2624/wewuxoloxefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7834/5387/files/netewaso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4729e1c0-d556-4589-bb11-ba6a2e66f00f/definazanoxuretinu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/381b0853-4f9a-40cb-81ae-26d12473a504/18951682024.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25755dac-2214-445f-b89a-f7705a8e15a6/trke_clan_isimleri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0c681c8-e188-40f6-bec9-89f611ae9e1b/21782500260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5598/0450/files/43049914490.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd8ce892-6ec6-46d4-8f0f-d8aa31524630/i_fuck_sluts_bo_burnham.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cbe9ff2-21d3-42ed-8a15-730488d9ddcd/jiwupinuxunabamogujixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/1954/7036/files/esercizi_di_nomenclatura_chimica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6791/4434/files/how_to_remove_a_pocket_door_wall.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_off00007e5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5A 5196 bytes
SHA-256: b78551de48ad3fde257bf8271ab852d315b516e0ffefae96f5aaacac65544bde
font_01_sfnt_off0000900c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x900C 11812 bytes
SHA-256: be1f45e00f5fc41e416b60815a4b675c8e4d8fc65a75a1fe92577e032e16312d

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