Malicious PDF — malware analysis report

Static analysis result for SHA-256 432e8ce49eef52eb…

MALICIOUS

PDF

46.6 KB Created: 2020-10-11 06:03:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 29bc1d52f10055dbd1c06b7a38f7b288 SHA-1: af62d1389f758a580e78a166b8767a97681b40c1 SHA-256: 432e8ce49eef52eb36862246b1a22b2b306a26657b9d5b29839dc346fc885166
184 Risk Score

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://ttraff.link/pify?keyword=summer+of+my+german+soldier+pdf In PDF document text
    • http://xeponuv.dovespalace.org/uploads/1/3/1/4/131453247/58111b356edbe9f.pdfIn PDF document text
    • http://files.reliance-church.com/uploads/1/3/1/3/131380966/7773a4a87f.pdfIn PDF document text
    • http://sajuxavav.australiantimberflooring.com/uploads/1/3/0/7/130775299/movabi.pdfIn PDF document text
    • https://site-1042587.mozfiles.com/files/1042587/vilisanazepojonaputi.pdfIn PDF document text
    • https://site-1043457.mozfiles.com/files/1043457/68400077589.pdfIn PDF document text
    • https://site-1038849.mozfiles.com/files/1038849/81059457516.pdfIn PDF document text
    • https://site-1037219.mozfiles.com/files/1037219/naxisekabupebazozegegi.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/6d1217f3-f068-447a-baa9-99678945c127/35956939776.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76612685-6244-4a36-8fe4-03decfc1a219/mulemobaforuwufupezisifew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f173812-52f5-4edf-bbc0-ad756a99f822/59319351461.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4bab7c1-bd4d-4702-ba12-cbd0f962434d/17991914071.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fbe5229-c1e8-40c6-b9c9-1a7b09dd035a/zuxanun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9265/9362/files/dead_samurai_2_hacked_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8785/3720/files/32214518564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3444/2390/files/pazedolaxoxegejiwevo.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_off00007783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7783 5568 bytes
SHA-256: 91d375cec6ffef74d1ff864ffe3758f8879f618c6535f5dd13936d5e9b8ed876
font_01_sfnt_off00008a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5A 10172 bytes
SHA-256: 720d6c1bf146137ffd09dd92199a19ed2e377ed568a736d31baca70490c876f4

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